From B to A

This morning I left home very early ahead of my flight to ensure I would not miss it. It snowed again and we know by now the chaos that snow creates on Belgian roads.
Way to early of course I enjoyed a venti hot chocolate at Starbuck's before boarding.
My gate was gate B94, in terminal B. I proceeded through all the checks and ended up in a bus. Bus which drove me to terminal A, where I climbed the stairs to access the plane from the terminal.
I wonder id it would not have been more efficient to have the plane at terminal B or tell us to go to terminal A... sometimes Belgian logic is a mystery to me.