Kubota M59, Kubota L3800, Grasshopper 428D, Topkick dump truck, 3500 dump truck, 10 ton trailer, more lighter trailers.
I usually cut the extending pieces off so they’re straight. That appears to be what you have done. That piece isn’t very big or nasty so I’d put it through the splitter as is. Sometimes I cut them in half before splitting. I assume you’re not using a maul. If that was the case I’d leave that piece in the woods.
I try to cut perpendicular to log, and avoid cutting at an angle. Depending on how you split that you may end up with one piece 22" long and another 12". Or you end up trying to make the wood splitter push/split against an angled surface which can get wacky.
At a "Y"/crotch, I try to cut each leg same length and perpendicular so I don't end up with 12" & 22" pieces coming out of the splitter. But how easy this is depends on which end of the tree you started on. If from the branch end you end up like in your picture. If from trunk end you can have even legs.
Back when I did use a maul (and thankfully those days are long past), I'd cut it down with the saw to something that would fit in the stove/etc, and call it an "all nighter"