From the reviews, it is not quite clear to me...do all routes include a walking tour of the Diocletian Palace?
All bus routes plus a walking tour are included in the day’s hop on/off ticket price. You can organise which order you do them in as you please (although two of the routes only have 1 daily timed departure). The walking tour goes multiple times per day and I dare say you could do that on its own if you wanted?
Get an answer from 1 Day Pass HOP ON-HOP OFF Bus tour from Split staff and past guests.