I'm not sure how your rig could have gotten to the dealer in 6 weeks.
When you place the order with your dealer, he has to turn around and place an order with Heartland. Then Heartland puts it into their build queue. The order turnaround takes at least a few days.
When we bought in 2010, Heartland was using a 4 week manufacturing cycle, the last 1 1/2 days is for the actual assembly. I'd be surprised if the build cycle is any shorter now. We bought at a very slow time for RV sales. Some of the queue time may be to manage order flow; some of it is undoubtedly to allow time for acquisition of options and to manufacture sub-assemblies and cabinetry.
After assembly, if you ordered full-body paint, the rig spends a week at the paint shop. We're up to 5 1/2 or 6 weeks.
After that, a transporter has to get it to your dealer, which I've been told can take at least 2 weeks, maybe more.
I'd say that 8 weeks from placing your order seems like a minimal turnaround. In our case, we picked up our Rushmore in Elkhart, 5 miles from the factory (no transport needed), nearly 7 weeks after placing the order. We were responsible for about 3 days of that.