Hi and welcome to this forum

The answer your questions is mainly 'yes'.

- Yes you can 'connect' laptop and other devices at the same time. All devices can be granted full or partial control of the mixer. Connect the laptop only via usb, so disconnect it from the router used to connect the other devices.

- Yes you can use the laptop to record 32 channels (+1 stereo channel), in Capture or in Studio One. Studio One can even record up to 64 channels.

- Yes you can still use an SD card to record 1 stereo track, e.g. the main mix. BUT I think that if you want to do this then you can't use the Capture app on the laptop. This is because UC would see two instances of Capture (one for the SD card and one for the Capture app on the laptop) and controls will then default to the laptop app I guess.

So in this case use Studio One for the laptop recording and you should be good.

This looks like all your questions get a 'yes'. 😊 You can record simultaneously via SD and USB and AVB. If you use Capture on a computer, it will make sense to NOT connect it to your wireless network. Then Capture/computer will just 'see' the USB information. Capture/USB can record 32+2 tracks, Capture/SD just one stereo bus (Main or stereo aux mix). You will need UC Surface on a tablet to control Capture/SD.

Mac or Windows work equally well. Just AVB recording needs a Mac, but is not at all as easy as USB recording. You need to understand a lot about networks to make this work and you have to re-organize the routing every time yo want to use it. AVDECC settings can not be stored.

You should see recording and controlling as separate things. Nornally they don't 'disturb' each other. You can use UC Surface and QMix to control the mixes, but the more wireless devices are involved, the more there might see conflicts or problems. There is always a critical phase when iOS has changed and the apps not...