When they do link them, I wonder if they can do it at the ends of the folding arms/tracks?
Would be more efficient as you’d obviously need fewer to ford a wide river - with the trade off being extra weight from stronger folding arms. Perhaps prohibitively so?
I’m not convinced that that picture of the two vehicles linking is them starting to build a bridge with these, and I am not sure that bridging vehicle is totally correct or appropriate.
These look more like mini ferries, and the picture of them starting to link two of them together is them building a bigger ferry out of two rather than trying to build a bridge with many of these all linked together.
Sure, you could potentially do that if you got enough of them in a pinch, but that would like American military levels of waste and overkill.
There are simpler designs for those sort of bridging missions, and most importantly, in those designs, the bridge elements are cheap metal add ons rather than integral parts of the vehicle.
That means you could build a bridge with just one or two vehicles (provided you had enough spare add on bridge modules, for which you should have plenty of spares bridge modules and dedicated mass conveyances for those modules for just that sort of long bridge building operation), and that once you have built a bridge, you can leave it in place and redeploy the bridging vehicle(s).
With these, not only are the vehicles themselves considerably more complex (hence expensive), to form a bridge with them would mean you are going to be tying up a lot of those when you have much cheaper alternatives. You will also have a much bigger logistical footprint of meeting xx number of these ferries instead of just one or two conventional bridge layers with a number of mass conveyances.
These are specialists vehicles designed to support small, fast, elite units rather than being something designed to get the main army across.