and the curious TATV which seems to take place during TNG Pegasus despite them not lining up symmetrically. Riker and Troi's age difference, the way events unfolded in Pegasus differ from the way they were shown in TATV, Troi's hair, Riker's decision to confide in Troi in TATV the way not shown in Pegasus,
All good reasons to suspect that the future of the ENT series' universe isn't set in the TNG prime universe. And that ENT itself is not occurring in the prime universe, but instead a universe that branched off the prime a century earlier. The two universes are similar, but also different in important ways.