Originally Posted by
cossack
2 - Assuming no traffic close behind United on 4R, United is given the option of Kilo but with an expectation to hold short of 4L.Once United had landed, they could be issued a "hold short 4L".
Without passing on their plan, the controller did not give United the full picture. "You got Kilo?" is a pointless question if the controller doesn't intend to allow them to use it. If they allow them to use it then they either need to cross 4L & 8L as their speed will likely not allow them to hold short.
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I disagree. If you will not be able to hold short of a parallel runway due to speed while exiting the runway you landed on, then do not use that exit unless cleared to cross.Even if cleared to cross, it would be wise to adjust ensure that you can stop anyways as it can happen that a sudden hold short is required. If this is difficult, a simple rollout to the end is an easy option.