I have a suspicion that the scene was filmed, but that it just didn't play well. I found Ken Takemoto pretty weak in his role, tbh. I was also expecting that scene and disappointed with the final cut, but I felt like based on his other scenes and reaction at the door I also would have been disappointed with the full conversation.

The series was definitely at its best when they slowed down for the in-depth character conversations, though. Sam and Bucky training at home was one of the very best bits.