The Reichwehr ≠ The Wehrmacht

The Mujahideen ≠ The Taliban

The Taliban was formed AFTER the Mujahideen dissolved, exactly 0 US support went to the Taliban because at the time the US was sending support IT DIDN'T FUCKING EXIST.

Again you will also find that very few Mujahideen fighters joined the Taliban, most Taliban fighters were new recruits who were not part of the Mujahideen, where as the Northern Alliance the majority of its fighters were Ex-Mujahdeen.