Season 4 was too much too late, and it became the TOS-tie-in show rather than the show's original premise. It felt like a gimmick, and that's why so many people consider it "fanwank" rather than "continuity." Other episodes, like Daedalus, even blatantly ignored ENT continuity and illustrate that the show basically became TNG-lite, just like VOY did.
How did "Daedalus" ignore ENT continuity?
The Enterprise is sent to the distant "The Barrens" where there are no stars for 100 light years. It turns out, well before the first Warp-5 ship, the Ericksons knew of this distant area and travelled there to do transporter tests. Then some plain ol' ship comes and picks them up at the end.
Remember back in "Broken Bow" and then "First Flight" when it was clear that the Warp 5 engine was a hundred times faster than was possible with the previous generation of warp engines, which were limited by the Warp 2 barrier? That the Enterprise could do in days or weeks what previously took years and years? How Travis said that they'd be doing runs that took his family's ship years to do? That Warp 5 engines would put other ships out of business?
Did the Ericksons take a ship that took years to get to the Barrens? Will that ship that picks them up take years to get back?
The NX-01 is supposed to be the fastest vessel by far. Now the Barrens are just a hop, skip, and jump for every Tom, Dick, and Harry starship. And if it is really so close, why send the super-fast NX-01?
In Season 5, the NX-01 just hung around the neighbourhood like any ol' ship, just like the E-D did after the first season or two of TNG. There was virtually nothing about this episode that couldn't have turned into a TNG episode simply by changing the charter's names.
They got a ride with the Vulcans.



Affliction had a boring conclusion (don't even mention Klingon wrinkles), and IaMD went on an episode too long (even if it was to help he budget).
Several years ago I did an animated Kirk meets Seven of Nine parody using episode voice clips and with authentic music and sound effects, with an added fake "next week" preview of Kirk vs. the Borg (which was more exciting than my main story).