May attend a show, Sunday, but using public transport, & uncertain if I'll be able to catch the last available, from South Station at 10:59pm. I'd need to leave Orpheum10:30 or so. Opening act schedule on stage at 7:30pm, w Pretenders, to follow

Check the MBTA website for schedule.

I think you may have to leave the venue early, but it depends on the band, not the venue. Just go and leave when you have to, the shows end by 11 so you won't miss much.

You will b fine

I did thank.ypu...I do know the time of the last transport I need but was more wondering if there's a way to determine how long/late the Headliner is playing...if it is Encore and out for the Headliner by say 10:30 pm where opening g act is on at 7:30 I'd be okay...