Don’t confuse a master plan written in 2006 with having planning permission already in place. I have quickly looked on the Christchurch planning applications website at the original terminal extension plans and there is no reference that I could find to joining those two buildings. Also note that application was over 15 years ago so any additional work allowed has probable expired in terms of a timespan when it could start. Normal planning only allows for. 5 year wait I think before commencement of works!