Normally this is the point where Leo would tune out, but honestly, after the holoturtles' useless ramblings, listening to his brother's familiar tech infodumps is almost calming. Even if he still only halfway understood what that meant. Donnie found some energy and followed it to the wall, and now they have a potential way to get over the lava-magma.

"Sweet. And way easier than using a broom to pull a pillow closer." Leo comes to look over Donnie's shoulder, but his communications datapoint can't make heads or tails of this wiring and his brain certainly can't do better, so it doesn't look like anything in particular to him. But he trusts that it makes sense to Donnie.