has anyone had Long Covid, before a diagnosis of MDS?

Husband (61 years old) just diagnosed with high risk MDS, and he has had Long Covid for 5 years (one of the first to get Covid.) I was wondering if anyone else has this....we are having some problems knowing if his fatigue is from LC or from MDS. He has all blood lines and hemoglobin low, just starting chemo. He is definitely spending around half the day in bed, which is a little more than before the MDS diagnosis. We are getting all the MDS treatment he can get, but we are just curious about if anyone else has had Long Covid before MDS.