Well, not with either but know enough guys to be of some help.
CX, interview process from whoa to go around 2-3 months, too many variables to mention tho, ie what position u going for, what base, what ur experience is etc. From notification of 1st interview to starting seems to take a minimum of 6 months ( happy to be corrected ).
2 interviews and a sim amd a cocktail party.
KA, as quick as 4 weeks from giving you an interview date to giving a start date, again, so many variables. If they want you bad enough ( lots of experience, and 320 experience ) it could be quicker, I think KA have hit a bit of a training backlog as they have taken about 12 guys from HKE/HKA in the last 2 months and that may put a small strain on the trg dept.
KA seem to be going for 1 interview ( combined personal and tech ) and a sim on the same day, convenient.
I guess any company that does'nt have to fly somewhere to interview you, ie. you go to them, would have to look favourably at you, but I don't know that its a disadvantage, other than it may take longer for them to visit your country.