WI: Byzantine victory at the Battle of Pelekanon

What if the rumor that the Emperor Andronicus III had been mortally wounded hadn't spread as it had in OTL and the Byzantine army hadn't become demoralized and panicked and been able to defeat the Turks at Pelekanon? Would the campaign of restoration have continued? Will it be possible to avoid the Second Palaiologan Civil War?
 
Assuming that the victory also allows Nicea and Nicomedia to be relieved, at the very least it prevents the Ottomans from gaining a base in the region for a few years. If the victory is big or Orhan I dies the rise of the Ottomans might even be halted indefinitely. Best case scenario that I can think of for the Byzantines (at least within the century) is that they establish a kind of control over Trebizond and then conquer the Black Sea coast between Trebizond and Western Asia Minor, since Trebizond had attempted (with some success at times) to conquer the same territory on its own. If the victory isn't a big deal though (or Andronikos is so foolish as to not capitalize) then you might only set the Ottomans back by a couple of years, though I bet the butterflies would still significantly change the rise of the Ottomans.
 
Assuming that the victory also allows Nicea and Nicomedia to be relieved, at the very least it prevents the Ottomans from gaining a base in the region for a few years. If the victory is big or Orhan I dies the rise of the Ottomans might even be halted indefinitely. Best case scenario that I can think of for the Byzantines (at least within the century) is that they establish a kind of control over Trebizond and then conquer the Black Sea coast between Trebizond and Western Asia Minor, since Trebizond had attempted (with some success at times) to conquer the same territory on its own. If the victory isn't a big deal though (or Andronikos is so foolish as to not capitalize) then you might only set the Ottomans back by a couple of years, though I bet the butterflies would still significantly change the rise of the Ottomans.

If the Byzantines can defeat the Ottoman badly enough or if Orhan dies and the Ottoman advance is halted indefinitely are there any other Turkish states that have to potential of pushing the Byzantines out of Anatolia and invading Europe?
 
If the Byzantines can defeat the Ottoman badly enough or if Orhan dies and the Ottoman advance is halted indefinitely are there any other Turkish states that have to potential of pushing the Byzantines out of Anatolia and invading Europe?

Realistically most of the Turkish states at this time have some shot, though none as good as the Ottomans at that point. Karaman was probably the second most powerful, but they were located towards the southeast of Anatolia, so it would take them awhile longer to share a border with Byzantium's territory.

As for going on the level of grand European invasion that the Ottomans went on, it would just depend on how well the Byzantines and Bulgarians fare during the extra 30-80 years before this new Turkish hegemon rises. Preventing the civil wars in Andronikos III's reign is critical for Byzantium, as well as having him maintain some level of competetive naval power. Bulgaria has allot more options. It was primarily split between three infighting dynasties at this point, and if any of them wins, one of them is partitioned, or they reach some alliance or other agreement they can probably resist. Bulgaria really shouldn't have fallen as easily as they did, they beat themselves even worse than the Byzantines did, and that is saying something (not to dis the Ottomans if anyone intends to take it that way, but there was no denying that there were civil wars in Byzantium and Bulgaria).
 
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