In the senior realm here - would love to chat with folks over lunch, brainstorm, assist, mentor, guide, etc. Can't do that AND be expected to deliver code at a 'full time' expected pace. What I would be delivering is... some code, some guidance, some assistance, etc. I've seen inside enough places to know that many senior folks end up being guarded and solitary because the deadlines aren't ever set to accomodate that sort of work. You're a 'Senior Developer(tm)' and the measuring stick is... lines of code.

Orgs get what they measure for. If your team values that sort of interactivity and support, it will ... observe it, measure it, and hire for that sort of person. I've seen groups evolve towards that, and they've been great, but it doesn't seem to be a default - most groups/orgs have to work towards it and and keep working at it.