Happens all the time.
Teams of people at Google work on the same features, only to find out near launch that they lost to another team who had been working on the same thing without their knowledge.
Teams of people at Google work on the same features, only to find out near launch that they lost to another team who had been working on the same thing without their knowledge.
PMs/TPMs/POs may not know as they're on different teams. Often it's just a VP game and decided on preference or a power play and not on work quality/outcome.