Does bipartite matching affects detection of overlapping objects with different classes?

[dxdiag-123]

This question is more about bipartite matching than RT-DETR itself, but I hope it's not an issue.

RT-DETR uses bipartite matching, and from what I understand (please correct me if I'm wrong), bipartite matching issues one-to-one object detection which reduces overlapping by assigning one object to a portion of an image marked by the object's bounding box.

Does this mean RT-DETR will have issues in detecting two different objects with different classes which overlap?

For example, an RT-DETR model is trained to detect helmet and person objects. If the model is used to predict a picture of a person who's holding a helmet in front of their chest (which result in helmet overlapping with person). Will this trouble the model in detecting both helmet and person?

Thank you.