Don’t worry. I wasn’t clear in my answer either and have deleted where I was incorrect.
As @JammyDodger points out, all these varieties are served out of the box, apologies for any confusion on my side.
So:
- Title links to last unread Post
- Last Activity time can be clicked to get you to latest Post (regardless of your reading)
- Replies number when clicked gives you a couple of useful arrows to click which tell you the time of first and last Post and navigate you there respectively.