#src/overlap##Purpose
Overlap detection between speaker segments.
##Surfaces-`detect_overlaps(segments) -> Vec<OverlapRegion>`-`OverlapRegion`##Dependencies-`types` — Segment, SpeakerId, TimeRange
##Invariants-OverlapRegion time ranges have start < end and contain at least 2 speakers.
##Verification
```bash
cargo test --lib overlap
```
##Notes-Used by resegmentation pipeline stage to identify multi-speaker regions.