The auction is pure Norfolk comedy gold
2♣ big
2♦ negative, not waiting
3♦ W is unsure whether he should alert or not (he should, it shows hearts, but E has made the bid he would make directly over 2♣ rather than over 2♣-P-2♦ and actually has diamonds).
Before bidding 5♥ the nonagenarian N says to her not much younger partner "It was a transfer damn it" which has the desired effect and S passes 5♥.
You are called at the end of the auction and come back at the end of play by EW who think S should be visualising something like xxx, x, Axxxxxx, xx and bidding some more diamonds, take it from here