TNG used a timelines only a couple of time. One, Picard being kidnapped by the Borg & was assimilated. The timeline was Picard needing a break to emotionally & physically recover. So, what does he do? He went back to France to be hounded by his older brother for leaving the family behind when he joined Starfleet. After that, his assimilation was only mentioned a few times. I never understood why the writers would have an episode going back to see his brother's family knowing he'd have to put up with his jerk brother bad behaviour. To me, a badly written & senseless episode.
The other where Spock attempts the reconciliation of the Vulcans & Romulans.