Don't worry, that was clear enough. I have been looking at possible successors to a longer-lived Philippe V. I hadn't known that his wife had been rendered sterile, though I had noted that her last pregnancy, a daughter, was a stillbirth. This was in 1322, after a gap of four years from the birth of a short-lived son, Louis. This was also the year in which Philippe died in real life, so I would say we can't know for sure whether she could have borne more children. Anyway, let's assume for argument's sake that she didn't, and died in 1330 as actually happened, survived ITTL by her husband.
Lacking a son and, by that time, a brother (Charles the never-now-IV died in 1328) he assuredly would have married again. A son from his second marriage would have been unquestioned heir even if, as is likely, a minor when his father died. A daughter could, it already seems established, not have succeeded in her own right and also would be too young to have a son for whom claim could be made (and anyway junior to the daughters of the first marriage). Again for argument's sake, let's say no children or at any rate sons from the second marriage and, to give a starting point, kill Philippe off at 50, which would be 1342.
Potential contenders for the crown would be:
1) his grandson by his eldest daughter Joan, Countess of Burgundy in her own right and Duchess of same by marriage, Philippe, an only child and 19 years old in 1342;
2) his cousin the Count of Valois, the Philippe VI of our timeline, 49;
3) his great-nephew Charles, later Charles II of Navarre, son of Joan II of same, 10;
4) his cousin Philippe III of Navarre, husband of Joan and father of Charles, and claiming jure uxoris.
Of these four, Valois would have been claiming as senior agnate. But that was not then an established basis for claim, and assuming that Philippe V had himself preferred and nominated his grandson, heir to both Burgundies, I think he, #1 above, would have easily carried the day. Claims #s 3 and 4 may be conflated. Their weakness is that Philippe V was undoubted King after Louis X from whom their claim ultimately derived. Proximity of blood depends on degree of relation to the last king to reign, and his nephew by marriage and great-nephew would struggle to say they were more proximate than his grandson.
So I am going to say that the heir to Burgundy is crowned, perhaps after some debate and manoeuvring and maybe with a minor war or two to follow. However, if we are not as merciful to the Philippe VI of this timeline as we were to his grandfather then he enjoys his crown for four short years before dying himself. Since this was through an accident he may well not have done, since as King of France he is unlikely to have been in the same place doing the same things as he was in life. If we kill him anyway and assume his marriage took place as in history, then his heir is his only son, born 1346 and King as Philippe VII almost straight away. His sixteen-year reign, again adhering to history, is terminated by plague, and being 16 he is as one would expect childless.
France at this point is beginning to feel that it is paying a high price for the 300 years of unbroken succession from father to son that marked the Direct Capetians. However, the successor is quite clear. The line of Philippe V's eldest daughter Joan is now exhausted, so the nearest male kin of Philippe VII is his first cousin once removed Louis II of Flanders, grandson of Philippe V by his second daughter Margaret and 32 at the time of his (probable) accession as Louis XI. In a familiar theme he is an only child, and when he dies after a 23-year reign he leaves an only child. Unfortunately, that child is called Margaret, so here we go again.
But not necessarily. In life this Margaret, Margaret III of Flanders, married her second cousin, the real-life version of the Philippe VII discussed above, then when he died before the marriage could be consummated her second marriage was to another Philippe, Duke of Burgundy, the youngest son of Jean II of France, himself the son of the IOTL Philippe VI. The line of Dukes of Burgundy that sprang from them ended with Charles the Bold and the Habsburg inheritance. If she had still married the same who knows how her and her husband's line would have ended, but it would have begun with John the Fearless, not Duke of Burgundy but the ITTL King of France as Jean II, inheriting from his grandfather at the age of 13. And so the Valois, or a branch thereof, would finally have made it to the throne after all.