(06 Feb 2019, 2:43 pm)Dan wrote Go North East have issued a press release.

Electric buses to hit the streets of Newcastle and Gateshead
Read more: http://newsroom.gonortheast.co.uk/news/e...ead-357749

The release, and other sources, specifically mention operation between Gateshead and Newcastle across the Tyne Bridge, which would seem to eliminate the Q3, Newcastle side only, and the Q1/Q2, not via the Tyne Bridge, from the running.