The trestle will determine the leg spacing on the base. I'm trying to minimize interference between table legs and people's legs. The outer edge of the base will be 11" in from the edge of the table top, and the trestle stretcher will be another 12" or so in from there. After playing around with two chairs and spacing the legs different distances, I've settled on 48" apart. This gave ample room for Richard and I to sit next to each other between the legs comfortably. 

Now that I've determined that critical piece of information, I lay out the stretcher for the two joints. There will be four dados cut, at the same angle as the legs are splayed. They have to be precisely in line with each other. This could have been easy, but it wasn't. One reason, the saw blade on the sliding saw tilts the wrong direction for these cuts. The other is I've only got one straight edge, the other is live. Fortunately we have a left tilt Powermatic saw. I set up an extension table for support of the long rail. I used the miter gauge to make sure the cuts would be square, tilted the blade to the correct angle and height. I set the rip fence to reference location for the two outside cuts.That ensured that they were parallel and in the same location. This required me to use the miter gauge backwards, on the far side of the wood for half of the cuts. I cut out the waste between those two cuts on the slider.

Once those notches were complete, I ran the legs through the wide belt sander to fit them to the joint. Here is the trestle and legs coming together.

I've left the stretcher horns long for now, they will get cut once I determine where it looks best. The last step of the joinery will be to machine a shallow dado on the inside edges of the leg the width of the stretcher. This will make for a clean looking joint and hide any wood movement gaps that occur throughout the year. This is illustrated below. In winter when the two legs shrink slightly in width, the two gaps you see in the center now would be visible without this second set of dados housing the stretcher. It will also allow the legs room to expand in the summer. 

And here it is all together for the first time.