Re: Klingon-Federation War of 2372-3
Whilst it's a non-canon source did the TNG Technical Manual state the Galaxy-Class began it's design life circa 2343. i.e before The Narendra III incident.
External the alternate Ent-D seen in Universe might be the say as the one we know. But that could be where the similiarties end.
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.