Events linked by end-to-start conflicts within the threshold: Event A (12:00-13:00), Event B (12:30-13:30), and Event C (13:15-15:00). Even though C doesn't start close to A, it starts within threshold before B ends, creating a conflict chain A→B→C.
Expected Result:
Grid group with 2 columns at stackLevel=0
Event A: in grid (column 1)
Event B: in grid (column 2)
Event C: in grid (column 1)