Feel the connection at the upper bicep, not the elbow
The speaker locates the arm connection at the upper inner bicep and tricep against the front of the chest, not at the elbow, which he says is not connected. He notes the arm does not give away at the start of the backswing; it stays there. He frames the pressure felt at the beginning and this arm placement as the parts that apply to everybody.
Channel: PorzakGolf
Watch official source at 6:03