It was with Cruz, but I think Trump was on in real-time.
-- New NBC [poll] wasn't mentioned during the interview. --
Correct, it didn't come up in either interview.
Sanders has a sober view of his prospects. He needs 65% of the remaining pledged delegates, and he sees a tough but possible fight; but many of the super-delegates to Hillary are in states that went 70-80% to Bernie. He says he can make the case that those delegates should support Sanders.
Sanders repeats the point that he polls better against Trump than Hillary does.