Hi,
@WanderLustToo, welcome to the forum.
The Senda Litoral and the Coastal route zig zag across each other and typically wind up in the same places for the end stage. Based on what forum members have said, you sleep in the same places as those who walk the Coastal, but split up again int he morning.
You can see a great map that shows the two routes (and many others in Portugal)
here. The website is done by Luis Freixo, and although I don’t know him, I can say he is a real camino angel, because he has the most complete information on these routes that I have seen. If you poke around the website a bit, you’ll see there is a ton of information (all in Portuguese, but as you probably know, if you open it on google Chrome, it will be translated into English for you if you request it).
The photos that people have put on the forum do not show the entire route down to Porto, but the link I just gave you will show you the full map. Here’s a small part of it.
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