Orthostatic hypotension vs POTS?

Not seeking medical advice or diagnosis!

So I have diagnosed orthostatic hypotension and tachycardia. My care team says I don't have POTS. Isn't pots OH + tachycardia though?

Just here to vent that this whole process is complicated and confusing! I wish more medical professionals were knowledgeable about POTS and other various dysautonomia.