Maybe with the HS17, but not with the HR series ....
I can't imagine trying to record 7 different shows at the same time ....
I could never find 7 things worth recording, let alone having them all on at the same time.
It isn't about recording 7 things at once, it is about recording x things at once while having y TVs turned on, where x + y might be greater than 7 on occasion.