Experiment- testing 2x full Lima / Jouef TGV rakes at speed

SNCF frequently runs double TGV rakes. These monsters are 20cars long. I have several Lima / Jouef full TGV rakes, so I decided to see if it was possible to find a way of running them together at speed without them ending up in a massive (and expensive) pile.
In the end, the solution seems to be not to couple them at all. I placed the dummy power cars at the front and rear, with the two motored power cars in the middle. The TGV Réseau power car pulls better than the POS at the rear of the front unit. So the two units naturally buffer up against each other. This seemed to work well up to maximum speed. I don't think they are running at scale 180mph, but it looks pretty impressive. Obviously, you would need a massive layout to make this setup viable, but there is just enough room on my setup to get a spectacular view of the consist.
I may look at doing reduced six sets (5 or 6 car) in future.
The units involved are a full rake Jouef POS unit (Duplex power cars with Réseau cars, and a Lima / Jouef Réseau unit. Some of the cars are POS decoration samples repainted with the old style window flashes- the Bar car is an undecorated running sample I painted from scratch. The Réseau power car is also a running sample redecotrated from scratch.