Could be, but there have been many cases of pilots missing an audible warning while under heavy workload too.
Most notably the Adam Air(?) crash in Indonesia, where the crew were so intent on debugging a faulty minor flight computer that they simply didn't hear the the warning klaxon indicating that the autopilot had become disengaged and the plane ended up rolling over, entering a spin and crashed into the sea.
Most notably the Adam Air(?) crash in Indonesia, where the crew were so intent on debugging a faulty minor flight computer that they simply didn't hear the the warning klaxon indicating that the autopilot had become disengaged and the plane ended up rolling over, entering a spin and crashed into the sea.