Captain Holly was in the Sandleford Owsla, dickwad. Not the Efrafan Owsla. But other than that, YES.

And Holly was totally hot for Thlayli (then again, who isn't?) - note how, when he was all hurt and dying after the destruction of the Sandleford warren and his run-in with Cowslip and company/the Efrafans (it differs in the movie and the book), his only thought was to find Thlayli to tell him he was right to leave. And Thlayli's like, 'That's, uh, sweet. And not at all stalkerish. And I totally didn't think you were the Black Rabbit of Ingle calling out to me... *shifty eyes*'