Originally Posted by bocastephen

Last year the entire concept was news to both UA agents flying me FLL-NRT and NH management (who I corresponded with ahead of time to make sure I wasn't denied boarding NRT PVG)....and the TWOV program had been around for quite some time.

I had to do quite a bit of educating, and for that reason, I decided to route myself to HKG first and take UA out of the equation for the leg to PVG, so I only need to worry about one airline.