Beijing ↔ Chongqing

Beijing and Chongqing operate on the same timezone with zero offset between them, producing a shared working day of 09:00 to 17:00 and a call score of 8/10. The cities carry no offset penalty in either direction. The fact package flags two modifiers for this pair: a lunch-conflict that simultaneously removes both teams from their desks, and etiquette sensitivity around business timing that reflects the hierarchical norms in both cities. Government relations in Beijing and the direct operational style in Chongqing shape when and how meetings are accepted. The live window is structurally sound but administratively sensitive — a recurring slot that fits local operating norms will hold; one that conflicts with hierarchy or directness expectations will quietly lose attendance.

The overlap window is 09:00–17:00 local time for both cities. The burden is balanced in terms of clock hours. The lunch-conflict modifier means the midday period removes both teams simultaneously, narrowing the practical window below its stated 8 hours. The etiquette-sensitive flag means that meeting invitations sent outside normal business hours — or without clear agenda framing — face lower acceptance rates on both sides regardless of the clock time shown.

Lock recurring meetings between 09:00 and 17:00 Beijing/Chongqing time. Avoid the 11:00–13:30 midday block when both sides step away at the same time. Frame meeting invites with a stated purpose and expected duration; this matters more for this pair than for pairs where scheduling norms are looser. A fixed recurring slot inside the shared focus block will sustain attendance. A one-off slot dropped in without agenda context will face quiet resistance.