intersecting joints

when I built mine like that I used what’d I’d call a stopped half-lap with the bottom stretcher. I then used 3 screws to secure it, so the two end bases could disassemble from one another. If dis-assembly is not a factor for you, I’d probably dovetail them in and peg it with a dowel.

Does the half lap or dovetail just lie below the mortise and tenon of the upright connecting to the foot?

-- "If I find in myself a desire which no experience in this world can satisfy, the most logical explantion is that I was made for another world." -C.S. Lewis

I usually offset the wedged mortise and tenon joint so that it is closer to the outside of the leg assembly. That will make room for a mortise to connect the lower rail.

Visually, the table will look just the same as the picture. Just offset the joint towards the outside.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush