Suggestions for scheduling remote O3s?

I have a question about how to separate morning/evening status update calls from the O3.  My direct is remote - I work in the US, he works in Korea.  We have two update calls daily to discuss work assignments, issue resolution, etc.  That works well for us.  The O3 is currently scheduled one hour after the daily update, and it's sometimes awkward to call him right back for the O3.

The time difference makes each update call early in the morning and in the evening for both of us.  I do the weekly O3 later in the evening (my time) so it's during his normal work day.  I'd prefer to keep it that way, as he spends a lot of time away from his family and I don't want to interrupt his evening with the O3.

I want to maintain a separation between the two calls so the O3 is clearly identifiable as a separate conversation, and to give him time to get his team moving on the day's tasks.  Does anyone have suggestions how to reduce the awkwardness of having these calls so close together?  The only solution I can think of is to schedule it later in my evening, but I'd rather not do that if there's a better solution I haven't thought of.