Medellín is 6 hours behind Brussels
Best overlap: 2:00 PM to 6:00 PM in Brussels is 8:00 AM to 12:00 PM in Medellín.
If you set up a recurring sync, 2:00 PM to 6:00 PM in Brussels (8:00 AM to 12:00 PM in Medellín) is the natural home for it. Medellín is 6 hours behind Brussels, which gives you a solid 4-hour window. Book earlier in it and neither side is rushing. Keep an eye on the calendar — Brussels observes daylight saving and Medellín doesn't, which nudges this window by an hour twice a year.