krieger
Banned
No, the succession pact worked independently from Anne’s wedding AND the part who stated a double wedding was still satisfied with Maximilian marrying Anne. The marriage was celebrated in 1515 and consummated or not (pretty likely will be consummated as soon Anne is 14) Anna was the Dowager Holy Roman Empress . Sigismund will not get Anna’s custody for two reasons: a) she is the widow of the Emperor and b) at the death of their father Anna and Louis were under Maximilian‘s custody (not that of Sigismund) so she would be under Charles‘ custody if any. Most likely situation see her going back in Hungary (at her brother’s court) were she will be eventually married to Zapolya before her brother’s death (who died in 1526 so plenty of time for Anna to remarry). Sigismund, husband of an Austrian Archduchess will not try to contest Karl‘s election in Bohemia (if the Emperor is still unmarried is likely Sigismund is still offering his eldest daughter or some niece as wife for him) and being without great alternative (as Sigismund will stay out and Zapolya will take only Hungary) is pretty likely who in the end the Bohemian estates will end electing Karl...
No, it was connected with Anna's wedding. If Maximilian was alive when Louis died, then yes Sigismund would be still inert in this situation. And what about this? HRE worked under elective, not hereditary system. German princes won't care about Anna's fate. At the death of their father (if you're referring to OTL) Anna and Louis were under Hungarian estates custody and they succesfuly blocked any attempts from both Max and Sigismund to gain control over Louis. AFAIK, it was Sigismund not Charles who voted on Louis's behalf in OTL 1519 election. So Charles won't get custody over her. I doubt if Louis would want her to be married to Zapolya. The faction which controlled young king's policy wasn't especially fond of Zapolya and they would refuse him Anna's hand just as they refused him an office of palatine (which he tried to obtain also). I don't know to whom would they Anna to remarry and sincerely, with all their stupidity combined, I wouldn't want to even know. Maybe to some Hohenzollern prince, since George the Pious was one of the most important persons behind Louis's throne. Sigismund wouldn't just let Karl (if he is conflicted with brother and he is not married to Anna) take Bohemia. IOTL, he hesitated a lot before giving it to Ferdinand (who could count on Karl and was married to Anna) and while being a husband of Bona Sforza (not some Austrian Archduchess) he wouldn't stay out of the race.