43:10 this is 100% a quantitative bid from north and not blackwood - you want to play this in 4NT rather than 5H. the North hand would pass 4NT as their 20 count is not the best 20 count in the world. You don't want to be in 5h missing two aces and occasionally getting a 5-0 heart break.
51:35 - this is just a 7NT bid - if you have 37 points between the two hands - just bid 7NT...I think you are potentially confusing people with this hand.
43:10 this is 100% a quantitative bid from north and not blackwood - you want to play this in 4NT rather than 5H.
the North hand would pass 4NT as their 20 count is not the best 20 count in the world. You don't want to be in 5h missing two aces and occasionally getting a 5-0 heart break.
59:36 - just because south opens 1NT - that does not deny a 5 card major - most players open 1nt with a 5 card major these days
51:35 - this is just a 7NT bid - if you have 37 points between the two hands - just bid 7NT...I think you are potentially confusing people with this hand.