This is the third time Kelton Pell and Mark Coles Smith have played father and son - The Circuit (2007), The Gods of Wheat Street (2013), and Mystery Road: Origin (2022).
The white hat and hatband (from his father's black hat) Jay wears during the second half of the series are the same ones he wears in the Mystery Road (2018) film and TV series. His father's gun is also the same gun he uses.
Tasma Walton, an associate producer of this show, played Mary in the original Mystery Road series.