In my case, we needed a 48h delay always. In the situation you mentioned, the contact is going through the weekday delay on Friday, then stops for 48h, exits on Sunday 14h, and then stops at a weekday delay.
The second “weekday delay” was also set to 7PM, so it will only leave the delay after Monday business time ends, to be worked on the following morning. So it does not get the full 48h (which would be Tuesday 2pm), but close enough.