Hi dcourtney50 thanks for coming here wanting to learn. I noticed you mentioned a "bench technical" in your OP and wanted to clarify that for you. Any substitute or bench personnel (assistant coaches, managers, etc.) that receives a bench technical is also "indirect" to you the head coach.

Basically it means you are responsible for your bench and holds you responsible by putting you a little closer to ejection (in addition to the free throws and getting the ball). The head coach is ejected when a combination of three direct or indirect technicals is reached. Many refs call it an "indirect technical" but I prefer to think of it as a technical that has indirect properties, so that we don't confuse it with a separate technical.

Thus, you as the head coach could receive an "indirect" by your assistant getting whacked, get a technical yourself, and then have a bench player get whacked (again indirect to you) and you would then be ejected. In your OP the referee was wrong that one more would result in ejection -- none of the two technicals he called had any indirect properties to you. Even if your player had been bench personnel when he got his second you would only have 1 indirect and could get two more before ejection.