They were speaking of "purchasing" a travel package using their Marriott Rewards points.
The member would have the "flight miles" deposited into their respective airlines "frequent flyer" account and leave them there. (they pay cash for their airfare)
Then they use the "hotel" portion to stay somewhere. (Or vice versa).
The only "issue" is the "car portion" is a certificate with an expiration date. (usually 1 year from date of purchase)
We have found that if you use the entire vacation package at once...you receive nights stayed at the respective hotel/resort.
If you don't use the package as a whole, when you do use the "hotel" portion you do NOT get credit for nights stayed.