I'm overseeing a commercial construction project and facing issues with subcontractor schedule conflicts that are delaying the critical path. What strategies can I use to synchronize their timelines effectively?

We have multiple subcontractors for electrical, plumbing, and HVAC work, and their schedules keep overlapping, causing bottlenecks. I've tried using basic Gantt charts and weekly meetings, but communication gaps persist, leading to wasted time and resources.