Cannot Connect During Long Query

In production we have noticed that we cannot connect to the DB while it is busy doing a long query. I tried to reproduce this locally and could not until I realized that we have auth turned on in production. When I enabled auth I also saw this behavior in my development environment. I CAN successfully connect to a DIFFERENT DB than the currently busy db.

I assume this is because auth requires a lock and the DB query is holding the lock.

I have not looked at the connection with wireshark to see if the connection completes and THEN the client blocks waiting to auth or whether there is never a connection established in the first place.

The upshot of what I'm saying is that the title of this ticket may be misleading.

In case it is important the long-running query in question is a Geo query.