I think this is not possible. The iR on Samsung is a sender module, not receiver, at least in S4/Note 3.
Regards
Get universal galaxy ir remote or smart ir remote these both have macro to turn on multiple devices and hdmi selectors dslr, coolers and fans
https://play.google.com/store/apps/details?id=com.remotefairy
https://play.google.com/store/apps/details? id=com.moletag.galaxy.s4.remote
This only for the phone, not the watch hopefully they will make app for the gear