yeah, I'd say the drying time is about right.......of course, it depends on the size of the log. But, with softwood, a good hot summer and it's good to go.
The big stuff can take longer.
It'll dry faster, if cut to shorter lengths.......also, I bet, if hollowed and grooved as it's gonna be, it'd dry even faster.
I do think it was a chainsaw.........looked like a square hole in the middle, on the vid I saw........
And, I'm damn good with a chainsaw (look at the new roof and ceiling on my rental house next door)...............
At a point this winter, I'll probably just make some, for kicks.
So, let me know when you're coming up.
I'll find some dry pine, in the mean time,,,,,maybe cedar.
Oak would be good, really hot,,,,,,,,but, I hate to waste good house heating firewood.