Complex sentence: McLure and Collins note a bishop named Felix who held the see of Châlons in 626 or 627 and propose that Felix may have lost his see and become a political fugitive following the death of Chlothar II in 629.
Split into simpler sentences: McLure and Collins note that there was a bishop named Felix who held the see of Châlons in 626 or 627. They suggest the possibility that Felix may have become a political fugitive as a result of losing his see at Châlons after the death of Chlothar II in 629.