Mixed thoughts on this.
We travelled 8 hours in total on the day to spend only 3 hours in Split!
I was really looking forward to visiting Split but disappointed by having a poor tour guide. The walking tour was cut to 1 hour rather 90 minutes and we were only given 3 hours altogether in Split instead of 5 hours.
Left me feeling extremely disappointed as the tour guide was very boring and not engaging. We weren't given enough time to explore as free time was reduced to under 2 hours and we had to take time out of that for lunch.
Now looking back it seems the tour company prefers to leave Split by a certain time latest 2.30/3pm and this dictates how long you get in Split rather than what you're sold in the tour description.