The inventory buckets don't "consolidate" in the true sense, but the entities that control the inventory try hard to find people to use that inventory before it loses all value.
Keep in mind that we're dealing with multiple companies that have the inventory.
- Marriott.com and the Marriott Rewards program are owned by Marriott International.
- Marriott Vacation Club is owned by a separate company, Marriott Vacations Worldwide, spun off from Marriott International several years ago.
- Interval International is owned by Interval Leisure Group.
II members whose weeks might not have had sufficient trading power further in advance might be able to successfully get a "Flexchange" at 59 days or less before check-in. II members might also also be able to use an Accommodation Certificate, even if a destination is not on the grid (some but not all Accommodation Certificates allow this).
II and Marriott Vacation Club can monetize distressed inventory through II Getaways and Marriott.com.
Marriott Vacation Club point program owners at higher levels can get "Last-Minute Reservations Point Discounts."
Marriott Vacation Club's exchange program can arrange to move inventory around to satisfy requests, as defined in the legal document.
However, none of this means that there will suddenly be more DC points inventory for a given property at 59 days. The two common sources of inventory at 59 days or less would be (1) inventory that was not booked because supply exceeded demand, and (2) cancellations.