Hi @Trinaintynine,
You could use Expression to organize the user-submitted Cover Date and Cover Time into the same format as the timeStart column, and then configure Filter query.
Expression reference:
concat(body('Get_response_details')?['r2688fcec52ca4f0ca9df50a360a16e2d'],' ',concat(body('Get_response_details')?['r28eb1dc8d0eb408786cc0f52e0f7f58b'],'.000'))
The parameters in Expression are configured using Dynamic content in your Flow. The second parameter is a space.



Finally, the time of Compose output is used as a filter condition. Note that need to add single quotes to the outside.
Please take a try.
Best Regards,