Conditional delays for Panasonic blu-ray players

Hello,

I’m one of the few out there with a Panasonic ST-series plasma that I turn on using a Panasonic DMP-BDT220 Blu-ray player.

To do it correctly I must power on the blu-ray (and thus TV) with the blu-ray’s “play” command and then I turn it off with a power toggle. Any chance you could add a conditional delay setting for the play command on Panasonic blu-ray players? Without it, my Onkyo receiver wigs out a bit and switches between tv/amp audio. Putting in a delay by doing it manually solves it, but I can’t figure out how to do it with roomie without this option enabled. Thanks!