Please don’t do this. Make your call as U1. In an off-chance I get blocked, am looking at another responsibility, get dirt in my eye, hit by a thrown bat and go down, etc…..if you “don’t know” and then come to me and I can’t necessarily make a call, it looks terrible - we now have 2 umpires with no call. If PU can’t offer you anything, what would you do as U1? Better to make a call, then, if a team disagrees, we can get together and then come to an answer.