I work in a very small company (only 3 developers, one of which being my tech lead). I have been here for over two years now and had the fortunate experience of being mentored by a very competent technical lead. I had warm experiences with mentors and leads over two years at different locations, so I feel confident in saying that this one genuinely did a fantastic job.
After some issues between management finally reaching a peak, my technical lead put in essentially a two month notice (saying that he'd stay until the current project is finished). I have no doubt that he will follow through with that. The other developer and I had expressed to him before that if he decides to quit, we would definitely follow suit as well.
To be honest, ideally, I'd really like to keep working with this team, or at least with him. I wanted to know if it's normal or accepted to ask a technical lead, or any colleague I suppose, if they feel comfortable to inquire at places they interview at if they're looking for additional spots to be filled.