A cliffhanger can resolve a plot but remain a cliffhanger because it leaves the audience... hanging.
Which happens at the "end" of "BTTF2".
I guess one could argue "BTTF" itself was a cliffhanger but I think we all viewed that ending as a gag and not an actual cliffhanger.
"BTTF2" was...
Coincidentally, I finally watched the 4K "BTTF" set last week.
Uni sent me a review copy of the 35th anniversary Blu-rays but I bought the 4Ks on a 2020 Black Friday special.
Didn't get around to viewing until now - wanted some time between screenings.
Still really enjoy the movies - and...
I've never understood the people here who get upset that a DVD/BD/4K cover is ugly, but I understand that mindset exists.
And obviously I understand that a steelbook with a damaged steelbook is useless. You're literally buying it JUST for the cover!