iCloud and Bonjour are completely separate syncs. I’m assuming the screenshot you posted is from the Mac, in which case I think you have made a mistake. Bonjour should be set up on the Mac as so:
(i.e. click on the “Bonjour Options” button). It is on the device you are syncing to - e.g. the iPad, the iPhone - on which you should then be selecting the databases you want to sync. What you are seeing on the Mac at the moment is the databases already on your iPad or whichever device you are connected to, which you seem to have made available to the Mac to sync. So what I’m saying is you only need to enable incoming connections on one device, and that device should be the one which contains the databases. If you do that you will find the Fusion database available for local (Bonjour) sync on the iPad.
Bonjour is only available to one device at a time; so if the iPhone is connected to the Mac, the iPad won’t - for the duration of the sync. You can leave Bonjour turned on; when your devices are available to one another on the same network, and DT and DTTG are open, a sync will trigger automatically.
You may want to read the documentation for DT, which you will find here or by selecting “help” from the menu. Bonjour etc. are explained there.