Another datapoint.
As mentioned above, Hudson's Bay is very good at posting consistently within 10 to 14 days.
Kiehl's is always very slow or missing altogether and requires follow-up most of the time.
Clearly Contact is very fast, usually within 10 days.
Apple is usually quick for me, however, that late April promo of 7x miles had me nervous as nothing posted until overnight:

Apr 24, 2019APPLE STORE CANADA1,526

Apr 24, 20197X MILES PROMOTION9,152

Apr 24, 2019ESTORE AEROPLAN STATUS3,052
Very pleased with my new Macbook purchase...