Originally Posted by Berengarius7
Enterprise-J is a timeship, not a starship. Three nacelled Galaxy from "All Good Things" was a refit of the Enterprise-D from another quantum reality.
That's not correct.
-J" was a Federation starship from a potential 26th-Century. The three-nacelled Enterprise
-D in "All Good Things..." was from a potential version of the late 24th-Century.
The only Federation timeships that have been identified onscreen as such have been the 29th-Century Aeon
and the USS Relativity