It was only one local franchise owner of Wendy’s that posted signs saying “We Stand with Chik Fil A”, not to direct people to eat there. It was down in one of the Carolinas I think.
And that sign was taken down shortly after it was posted. Wendy's corporate tweeted that one franchise owner had posted the sign and that it had been taken down. They ended their tweet with "We proudly serve ALL customers." They were clearly distancing themselves from their "rogue" franchisee.