It turns out that there is a lot less clearance between the table and the lower guides on a Jet saw than on the Delta – like 12 or 14 mm. So, I decided that Blake Weber's idea would be hard to pull off, especially with the materials I had on hand. But I still wanted the dust to go away and the space requirements, power consumption, and noise of a "real" dust collector all suggested that it was at least worth trying to get my CT36 to do the job.
I figured that if I couldn't get a huge volume of air, perhaps concentrating the suction close to the blade might work. So, I built this:

The pipe is 3/4" PVC, the contraption is held in place by rare earth magnets on the top edge of the plywood blocks. There are four 10 mm magnets and they are barely adequate. The stock 27 mm Festool hose is a tight fit on the outside of the gray PVC conduit.
So far I'm pretty happy with it. Here's the result of cutting a couple of half lap joints in 2x4 fir. First, without the contraption:

And now, after cleaning up, with the CT36 running at full power:

It's a little hard to tell from the photos but the before is about 1/2 a cup (quite a but came out the standard vacuum connection as well as around the lower wheel, after is less than a tablespoon.