Syrlya's caught pieces of the conversation, but until there's confirmation that Nightshade has an easier way they'll follow, he's still focused on keeping an eye on their surroundings and path. Which means he's late to catch up and when he teleports back in place, and the ground has just crumbled and Syrlya has absolutely no footing.

There's a shrill hollar, dirt gently clouding into the air as Syrlya flickers back into view on the ground of the tunnel.