No. Lots of posts on this. But you can use 1 trans to 2 receivers. (There is a Zaxcom system that can carry 2 channels of audio, either stereo or 2 mono, but it's VERY expensive.)
You can't use two transmitters to one receiver on the same frequency, no. What you're basically asking is, could you use the receiver as sort of a "mixer", where it would receive both channels and send them to one XLR output, and the answer is no, instead of getting two channels you just get interference.
