First time I watched the alleged goaltend video, I thought goaltend, looked to me like it had just slightly started on it's downward path. Watched it a few more times and my opinion never changed.
First time I saw the dunk. I thought no foul, but wouldn't be surprised if one was called. Watched the replay and watched it a few more times, now I think definitely a foul. A lot of contact there, even if it's after the dunk, contact after a shot is still supposed to be called.