Tip: See blog on [[vague vs normal vs specific answers]], but in this case, be specific if you want to demonstrate these qualities.
Tip: you don’t need to prove anything if you already have convincing team-lead experience on your CV.
Tip: Tell stories
Tip: show your familiarity with the typical front office culture.
Tip: demonstrate you know how to work with QA team – give them the docs on build/deploy, DB deployment
Tip: demonstrate your documentation best practices – wiki (GS), jira (GS, ML), cheatsheet/runbook
Tip: Humor? If you are 100% sure about side effects, then I think it can help demonstrate communication effectiveness, but I feel a lot of good self-running developers aren’t humorous.