Combining 2 NanoKontrol2 devices

[dirkc_be]

Here is the thing: I use a NanoKontrol2 controller to make rough mixes in Ableton Live 10. But when I have more than 8 tracks (always!) and I push the key to reach the next 8 tracks I only can do that once, because when I come back to the first 8 tracks, all faders are in the wrong position to fine-tune the first tracks etc.

So, I want to combine 2 of these midi controllers. Only, when I connect them, Ableton recognises only one of them.

What do I have to do to combine two of these controllers (next to another) so that Ableton "sees" one midi controller with 16 faders?