Hilton HHonors - How Long should it take to convert mileage to HHonors Points from AA, DL & UA?

Just wondering what the experiences have been regarding these 3 airlines and how quick each converts.

I just want to convert some mileage from an airline and I kinda need it done as expeditiously as possible.

Thanks for the help in advance.

For me, CO conversion took 60 days, a UA conversion took about 3 weeks.