An IHC sticking around after missing out on the top job doesn’t seem to happen often, but I was able to find an example. Terry Robiskie was OC for the Browns and was named IHC late in the 2004 season. He stuck around as WR coach for a couple of years after the Browns hired Romeo Crennel. It was Robiskie’s second IHC job (he did not stick around after missing out on HC the first time with Washington).