I have seen a counter done with kote gaeshi where you take the high fall, something happens, and your partner subsequently takes a fall. I'm a little unclear on the something happens part. Could someone enlighten me on this?
You keep a hold of him. I've no details, I've just seen it demonstrated. Like Matt said, you can only do it if tore messes up.
You can counter koetgaeshi with another kotegaeshi if you're brought in too tight to tore, applying on the hand he uses to support. If both of you are terrible bad at applying technique but terrible good at reversing it you could do this reversal over and back for ever and ever without anybody ever winning.
Ooops, I've said too much again...