So when did Spock get married if Tping was just his fiancee in SNW and Chapel never knew? Seems like a stretch that She never knew they were married since her and Spock had an intense sexual relationship 6 or 7 years previously and she did indeed meet T'pring during SNW. Also I find it hard to believe that Uhura had zero knowledge of T'pring during SNW. You would think she would have heard through at least her friend Chapel.

. Let's face it the whole thing is a stretch. It's very thin and before SNW this was never the way it was intended or even portrayed in TOS. Everyone is surprised by T'pring in Amok time. Chapel included.
It's like trying to fit a square peg into a round hole. By God they will keep trying though.