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Question re: 'success silent auth' logs

Can someone confirm whether a ‘success silent auth’ log is generated any and every time and user goes from application A to B using SSO? In other words:

  1. User goes to application A, redirect to Universal Login, does a full login, goes back to A,
  2. User then goes to B, is automatically logged in thanks to SSO.

The first step will always generate an s (successful login) log event. Does the second step always generate an ssa log event?

Basically I am trying to understand what all s and all ssa log events for a given client tells me. I believe it is: all full logins, all silent logins via SSO, and all token renewals.