Simply open the specific conversation on LinkedIn, launch the Recruitis plugin (if you don't have it yet, you can download it for Chrome browser here), log in with your credentials, and select the messages you want to synchronize - or you can click the "Sync All" button to upload the entire conversation.
The selected messages will then automatically appear on the candidate's card in the Communication section.
For an overview, here's a short video
In addition to measuring SLA directly on the ATS Recruitis homepage, you can have a report generated via email.
When rejecting a candidate, you can record the reason for rejection, which is automatically reflected in your statistics and reports, and also serves as a tool for searching candidates in the database. This allows the reasons to be best tailored to your needs.
A plugin enabling saving candidates from LinkedIn and several other portals.