I created a method based on a arduino+usb host shield in order to test the latency of a controller with high precision. This requires no external systems like a console, the test is done directly on top of the device.
I know that the usb shield is compatible with other boards. You can find in the documentation the list of known working boards https://github.com/felis/USB_Host_Shield_2.0 So yes teensy 2 is part of them but maybe you’ll need a bit more work to do the proper wiring I’m not sure.
The shield was originally designed for the Uno/Mega on the large version and for the Pro Mini for the small version. If you have those with the latest revision of the shield, no wiring is necessary, just plug and you’re good to go