J'ai trouvé ça :
-Hold the home (house looking) butting and the back (curved arrow) button together for 5 seconds. The power button will blink red and the tvs should say something about the remotes being disconnected. Note, do not block either tv until after this step. You want the remote to disconnect from both. You could just disconnect it from one and it should work that way too I suppose
-Block the receiver of the tv that you don’t want that remote connecting to. You can start over and do it as many times as you want so no stress
-Hit the ok button (ridged button in the middle of the round part). If you did it right, the tv you’re trying to connect to will say that it’s connecting while the other one won’t
-Do the same with the other remote except block the other tv