In case a session drop the submitter should reconnect. For the submitted data you have two options here:
All the requests that haven't got any response can be resubmitted in the new connection and the timestamp difference between the initially submitted and the final response will show the peek
Leave the submitted requests that didn't get any responses as is and fille the responses parquet with maximum latency timestamps to declare the session drop and have the rest of the requests submitted as normal.
In case a session drop the submitter should reconnect. For the submitted data you have two options here: