Leave your client open in the background while you do something else with pings enabled (all clients can be set to display a notification or play an alert noise) and patiently wait your turn. They will ping you when it's your turn. If you're staring at the channel waiting for something to happen, you're doing it wrong.

A friend of mine waited for like 72 hours before he got his interview but from what I've heard this was more of an anomaly.