Hi captain playstation,
There are 2 ways to line up runway 28 via runway 16 and E1, I'm not sure but what Ground do is ask you will you be ready at the holding point. If you are you taxi to E1 if not (lots of times wide bodies) the taxi you via runway 16, this keeps the traffic rolling. What I suggest happened is they first told ground they would be ready on reaching,then got to the holding point and blocked traffic behind them not being ready. They were then asked to enter runway 28 and vacate 34 bringing them in a circle to clear the holding back to the holding point. They did not do it at first then called ready and were cleared to line up and hold,and were not ready for take off again disobeying the instruction another 3 times. P.s. There is no room in that corner of the air friend for more entry points, as the rest is restricted ares for the ils 10 and 16.