Well, when there is a 4-4 heart fit and one hand has a void, it seems that someone at some point should bid hearts. In the Soloway style of jump shifts, as played for example by the bots, it is impossible to find the hearts after the 2S bid. But nobody, including me, likes the 2S bid. So suppose it starts 1C-1S -1NT, a reasonable beginning. Now the problem is, as it so often is on bbo, that probably the partnership has not discussed much of anything about what now means what. If we are playing 2 way nmf after 1NT, or x-y-z, then 2D is an artificial game force. Opener should now describe his hand. He has four hearts, he does not have three spades, the description is straightforward, he bids 2H. He has already described his hand as fairly balanced and presumably 12-14 highs, his partner has asked for a further description, so he gives it. Now some play that with three spades and four hearts opener first shows the three spades, some play that he first shows the four hearts. I have a slight preference for first showing the hearts, but my real preference is for knowing which it is that we are doing. After responder learns of the 4-4 heart fit it is basically up to him to select how high they go. If the pair is playing standard nmf rather than 2-way then 2D is still artificial and the response is still 2H, but we are not yet in a game force. It would be good to have agreements here as to what happens next. The hands fit very well and the hearts break 3-2 so it makes 7H. But only experts, maybe not even experts, can find out about the fitting spade K, the fitting diamond Q, and the club A for pitching the long diamond. And no bidding system uncovers the fact that the hearts are splitting. But after 1C - 1S - 1NT - 2D - 2H it should not be that tough for responder to choose 6H, maybe just by jumping to 6H.