When a user clicks two different affiliate links, the system overwrites the earlier click with the later one, so only the final touchpoint gets credit. This is usually tracked through cookies or session IDs that store the latest referrer. Logs still record both clicks, but the attribution engine resolves them into a single credited partner. Think of it like a last tap wins rule in a checkout flow. Analyzing these patterns helps BMF.io see assist interactions even if they don't earn commission, and refine partner value measurement over time.