The real aqueduct trail runs through Mt Evelyn. If you go to the small park behind IGA you'll see it there. From there, it runs both ways: further into residential Mt Evelyn, I forget exactly where it ends up; and the other way, across York Rd, it winds around and yes, almost joins up to the Warby trail between the Cog and York Rd. A nice little out and back detour from that point. Easier to find it from near IGA though.