You can get them 11 months in advance but only for the resort you have points at. At 11 months you can't combine the points. You can combine the points at 7 months for a reservation at any resort.
As HBC said, you only get the 11 month window at the resort where you own the points.
A common strategy for those who own two contracts is to bank one contract, and borrow on the other so that you can use two years of points at the home resort at the 11 month window.
The following year you could use the other contract to use two years of points at that home resort.
This is what we do...it works best if both resorts have close to the same amount of points.