Call_me_jorge said: "I seem to recall some dramabehind the scenes with the musical The Visitor from a few years back, but are these two no longer friends because ofcreative differences? Brian Yorkey was not at the opening night of Next to Normal in the West End, a show he won a Pulitzer for. Was he avoiding Kitt or is there another reason for his absence?"
First of all, it you "recall some drama," why would you be asking?
Secondly, as hard as this may be for you to wrap your head around, showing up for a secondary opening of one's show is not nearly as important as you want to make it. Sure, if one is not busy and it fits into things, but it is not that unusual that one has much higher priorities in the scheme of things.
Third, if he wanted to go and what you "recall" was true, a grown man knows how to navigate around another person at an event without skipping it.
Finally, as you should (but apparently don't) recognize from the chilly reception you post got here, toxic blind gossip is not cool.