Let's say that you normally play kickback for hearts and are sufficiently unsure how partner would take 4NT now (natural? ace-asking? Spade cue for hearts?) that you choose not to bid it (and the same for 4♠). Which other bid do you choose?
Afterwards, we discussed that 3♠ here should be natural and forcing and 4♠ could then be ace-asking in hearts, but I am curious what continuations to this auction others would recommend.