Transferred points from Marriott Bonvoy to Korean Air. Given the daily max restriction limit that Marriott imposes, I had to split the the transfers into 2 separate transactions on subsequent days as follows:
Day 1 (Monday, Feb 3): transferred 240k Marriott points to Korean
Day 2 (Tues, Feb 4): transferred 230k Marriott points to Korean

The Day 2 transfer posted into my Korean account about 24-30 hours later. I am still waiting, however, for the Day 1 transfer to post. It has now been 5 days. And still nothing posted. Anyone have similar issues?

I called both Marriott and Korean and neither provided much help.