Can I replace DMX jump with ethernet between Sensor+ racks?

I have a pair of Sensor+ (CEM+) dimmer racks, currently connected to each other (and to the console) via DMX 5pin. I could do some experimenting, but I don't always have access to the dimmer room.

Is it possible to run data from the console to the first rack via DMX, and then use an ethernet cable between racks 1 and 2, so I can use that DMX cable elsewhere? (i.e. console-DMX-rack-ethernet-rack) Or does it have to be 100% either DMX or ethernet for all connections?

mostly this would be great for dmx rescuing, using my own short ethernet jumper cables I can pick up cheaply until I can get building management to officially install a full proper network for the theater.

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