Is there any evidence attesting to the fact that Rambam was even remotely familiar with the writings of any of the Ba'ale Tosafot?
The reason I ask is because Wikipedia makes the claim that the tosafist 'ELHANAN BEN ISAAC OF DAMPIERRE' was "often quoted by contemporary scholars, and is mentioned in 'Minḥat Yehudah', 'Shibbole ha-Leḳeṭ' and Rambam's 'Sefer Hafla'ah'." This suggests Rambam knew about some of the Tosafot. The footnote is a link to the JewishEncyclopedia entry but it doesn't direct you to any specific source in Sefer Hafla'ah and it all sounds suspect.