I'm booked UA, BNA to EWR (First) then EWR to SNN (Business) later this month-- traveling as a family of 4.


We have 2 hours between flights. I'd like to take an earlier flight from BNA to EWR to give us more time to make the connection.


There are several earlier BNA-EWR flights with plenty of available seats in first.


UA won't let me change the BNA-EWR leg because on the EWR-SNN leg the business cabin is full, even though We already have the EWR-SNN booking and seat assignments.


Does anyone know a way to make this work?


Thanks.