A:AnswerNo. Just requires a source signal (blue ray, cable box, etc). Probably would work better w/o internet because signal tends to drop because of interference with router.
A:AnswerNope sorry. This isn't meant to multiplex or split streams from receivers. This is just designed to remove the physical hdmi cable aspect of media.
A:AnswerIt's not meant to split smart features from one TV to another. Also I've never seen a TV with an output? But if it does then I don't see why not, it'll most likely be a mirror image of what on the transmitting tv.