I note that, as part of the upcoming changes to bus services, some are being rerouted from next week to account for the tramway extension:

https://www.adelaidemetro.com.au/Announcements/News/Network-changes-from-Sunday-17-December%20 https://www.adelaidemetro.com.au/Announcements/News/Network-changes-from-Sunday-17-December%20

The O Bahn tunnel is open for walk-throughs today apparently. Opening of the tram extension must be getting close.

Tony P