Yes, you can charge 3 devices at the same time.

Here's the Power Schematic:

•Qi 1 = Phone Charger

•Qi 2 = AirPodsCharger

•Qi 1 = 10W Max (7.5 for iPhone)

•Qi 2 = 5W Max

•USB-C = 18W Max

•Qi 1 + Qi 2 = 10W + 5W

•Qi 1 + USB-C = 5W + 10W

•Qi 2 + USB-C = 5W + 10W

•Qi 1 + Qi 2 + USB-C = 5W + 5W + 10W