Thank you for your interest in Test Studio.
As far as I understand you would like to have details for the http requests you have captured and the time they take to be executed. Since I am not quite convinced if I got your scenario absolutely right I will share few different resources for your reference. What you could accomplish with a well designed load test
is described here
If you would like to measure the time a transaction took you will more likely need a performance test
On the other hand if you would like to modify the http requests somehow and verify their responses you will probably be interested in Test Studio for APIs
I hope any of the above will match your query. Though in case of any further questions please do not hesitate to contact me again!