Looking at booking BOS-IAD-HNL but UA.com shows R=0 if searched together or R=0 for BOS-IAD and R=2 for IAD-HNL. Should I book the two segments separately using multi-city to ensure RPU gets processed on the IAD-HNL segment or is it ok to book BOS-IAD-HNL and apply the RPU online such that the RPU will clear automatically IAD-HNL and waitlist me for BOS-IAD?