A 68 isn't really a particularly big bait imo, pretty small fish will be able to eat it no problem, ofc big fish will eat it as well. Even a 8" hudd 2-3lbers will readily attack. They might not realize how big it is, it could be a territorial strike, could be a lot of things that I'll never know but what I do know is bass have big eyes and big mouths and it's really difficult to use a bait that's too big for them to eat. Forage species is overstated as well imo unless they're actively pushing bait schools, then having something that matches can be real important but even then not always. That 68 trout pattern could be a trout, a shad, a bluegill, a small bass, or just their next meal. I really don't think they stop to think about it and even know themselves.