Flat Towing Lincoln Navigator with Driveshaft Disconnect

You can't only disconnect the rear driveshaft and not the front. With only the front driveshaft turning there is no way to lube the t-case because the pump is driven off the chain the is driven off the output shaft of the case. The trans may not be damaged but the t-case will be.
Maybe put 2 disconnects in?
The only other solution is to get a vehicle that is towable 4 down.