Ought to play Overseer before Tesla Effect?

I've played UAKM and Pandora, and I've certainly seen the Overseer cliff-hanger ending, though I've never played the game. Will I enrich my Tesla experience if I play Overseer first, or is Overseer irrelevant to to Tesla other than the cliff-hanger ending? Also, should I listen to Radio Theater before playing Tesla?

Thanks,
Harry the Elusive aka Harry of Brooklyn
Overseer is about Tex Murphy's past, so it is not necessary to play it (though it's a fantastic game). The Radio Theater tells the events that led to Tesla Effect, so it adds some details to it, even if it leaves us with another cliffhanger.

I would play Overseer and listen to Radio Theater just to follow the order in which they came.

Hope that helps.
Thanks for your advice!

Harry