This idea has been merged into another idea. To comment or vote on this idea, please visit A-I-14637 Integrate Aha! into my daily workflow with an improved Slack integration.
Right now - when tagging someone in Aha! it links the user on Aha! to the comment e.g.
Comment by XXX
@YYY (link to user in Aha!) ....
But it is useless to have it that way - it would be much nicer if the tagging on the comment in Aha! corresponded somehow to a slack user and notified them.