Syncing reservations by iCal is a traditional way that takes generally 30 minutes up to multiple days in order to complete.
Custom iCal reservations are imported every 30-60 minutes into the Hostaway software. For exporting, it would depend on the channel pick-up time and we can estimate around 60-180 minutes.
Tripadvisor uses iCal access counting for the iCal connection, this means that the iCal can only be accessed once per 2 hours.
If you manually accessed the same iCal as used in Hostaway, it takes another 2 hours before the Hostaway software can access it again.