The Cowboys are upset with the Giants over the use of walkie-talkies in Sunday's 10-7 loss, and have notified the NFL so it can investigate the matter.
According to the New York Post, the NFL is now looking into whether the Giants broke any rules when coach Ben McAdoo used the device to relay plays to Eli Manning.
Manning claimed there was a problem with the regular communication system early in the game, which hindered his ability to hear plays and instructions from McAdoo.
“I’m kind of sitting there waiting for the play, and it was a TV timeout.