Neither did I until I started writing the drabble. It's funny the way insight crops up when you're not expecting it. We know that Bilis tried to influence the team to open the Rift - and succeeded - but when did he start manipulating them? Was he the one who caused Diane's plane to get set adrift in time? He wanted to distract Torchwood; if he had anything to do with Diane showing up, then he succeeded with Owen.

Thank you!