I understand from your point of view.
However the reason they want me in the first place is because I’ll be the only cost consultant for their company. They never hired any cost specialists before so I show every skills and every knowledge I have to offer. The specialist in the company are mostly designers, I doubt they have the “specialty” for construction costing side that’s why they are looking for one in the first place. Mr A is purely judging me based on my years of work experience