Your post is not very clear, but I presume that you are referring to delay/cancellation compensation under EC 261/2004 and are asking about how flight times are calculated. I am not sure that it matters as it is about the return KHI-BHX. If this is not correct, please advise.

As EK is a non-EU carrier and both KHI and DBX are outside the EU, EC 261/2004 will not apply to the return and you will not be able to claim anything under that Regulation under any circumstance.