These T5 flight numbers are the same used on its long running BHX - ASB route that started in the late 90's , stopped briefly after 9/11 then stopped again in 2020 due to the pandemic. It was operated up to 4 times weekly (using 737 initially, then 757 and 777) and survived almost solely on connecting pax to ATQ and DEL. If T5 have no onward connections to India from ASB anymore as reported, I really don't see how this will work for T5 unless it's primarily for cargo. Having said that, with AI starting at LGW and rumours of a second daily service at BHX, if T5 were to start offering India connections again, STN would be a good choice to avoid the might of a resurgent AI, although they did happily co-exist at BHX for a number of years.