Welcome @roserogers, I don't have any experience with MSA but there is another discussion you might find helpful:
-- Parkinson's along with Multiple Systems Atrophy (MSA): https://connect.mayoclinic.org/discussion/parkinsons-plus-msa/.

Here is another site that has a lot of information and may help answer some of your questions:
-- Multiple System Atrophy - Types and Symptoms: https://www.multiplesystematrophy.org/about-msa/types-and-symptoms/.

Did the Movement Specialist offer any information or suggestions on what to expect?