Packets on different interfaces are listed as part of the same conversation

Summary

Wireshark treats packets from different interfaces as part of a single conversation.

This is especially problematic with BLF files, that allow multiple ports per channel.

When the same packet is seen on multiple interfaces, Wireshark marks it as a retransmission, while it is simply the same packet captured twice (or more).

The same happens when the packet is routed from one interface to another and the capture is done on both interfaces at the same time.

This is a more general case than #16762 (closed).

What is the current bug behavior?

Wireshark considers packets on different interfaces as part of the same conversation.

What is the expected correct behavior?

Wireshark should separate conversations based on interface ID.