So…tower-assigned headings and altitudes needs to be briefed then? Does that portion help you any more than holding entry? I never said a realistic plan has to be complicated. The point is that you do a professional courtesy to your coworker to let them brief what they feel is worthwhile on their leg. Believe it or not, the brief can be just as much for the briefer as the briefee, and if that’s the habit pattern they have, (time it) the extra 15” ain’t gonna kill you…not to mention your 5” add-on doesn’t help much either (other than interrupting their personal flow). Assuming your technique was from your previous time as a newish 717 captain, you probably gave your demo first on the first leg, amiright? If after that they still do their way, let it be. You want to be an LCA - go for it. Just don’t practice on folks who may or may not care less about your techniques if they aren’t asking.

For what it’s worth - I brief the same as you. But I do me and let the PF be the PF unless safety is at risk. If somebody wants me to instruct without being asked, they’ll make that clear.