Unfortunately, that is not possible.
The Bosch Smart Home Controller 2 is a zigbee hub (“coordinator”).
The Zigbee profiles that smartthings supports only allow for one hub per zigbee network. So you can connect a Zigbee end device to the Bosch Smart Home Controller 2 or to a smartthings hub, but not to both at the same time. And you cannot connect the two hubs together.
There is an official cloud to cloud integration between the Bosch home connect app, and the smartthings app, but I think that’s only for appliances, not for the Zigbee devices.
You may be able to get partial integration through Alexa routines (not SmartThings routines), but that’s not using edge Drivers.
The good news is that Bosch has said that it does intend to support the new matter standard eventually.
If (but this is a big if), they update the Home Control2 to be a “Matter bridge“ then you should eventually be able to bring it into smartthings that way (although not necessarily all devices or all features.). That would use stock edge Drivers, and not require any custom code. But we aren’t there yet.
At this point, the best thing to do would probably be to contact Bosch support and ask them if they are going to eventually have a Matter bridge, and when.
