Inquiry about Multiple Records with Different Stream Classifications in Ms Teams Calls Quality Data

Hi everyone,

I'm retrieving call quality data for Ms Team using dimensions and measures for analysis. I have observed that for each conference, there are multiple records with the same start time, end time and user name, but with different stream classifications.  For example, there are multiple records for the "unclassified" stream where the difference lies.  Could you please provide clarification on this?

Thank you.