Although the replies to 4NT are more compressed, it is almost always possible to infer which number of keycards is correct: 0 or 3, 1 or 4, 2 or 5. Evidence for that inference includes the entire auction as well as the number of key cards that the 4NT bidder holds.
Although the replies to 4NT are more compressed it is almost always possible to infer which number of keycards is correct 0 or 3 1 or 4 2 or 5 Evidence for that inference includes the entire auction as well as the number of key cards that the 4NT bidder holds