Cleveland Cavaliers head coach LeBron James was typically hands-on and vocal while leading his team to a loss to the Houston Rockets on Tuesday night. It’s tough to pin all responsibility for the loss on James, though, seeing as he was without his best player, forward LeBron James. More worrisome than the defeat, however, was a moment from the second quarter, when assistant coach Tyronn Lue was seen very clearly undermining James’s instructions:

The Cavaliers have had their share of chemistry issues since James took over as head coach at the start of the 2014-15 season, but the cracks have never been more visible than they were last night. The Cavs are still favorites to win the East, but no coach, particularly one as experienced and competent as James, wants to head into the playoffs with his far less competent assistant gunning for his throne.