Stitching large pieces together?

What’s the best way to sew together large pieces, such as strips of an afghan? Please don’t tell me Kitchener stitch…I know how to do it, but I don’t want to have to do it for such large pieces!!

Thanks in advance!

I don’t know that Kitchner stitch (I need to learn). I would think a mattress stitch or slip stitch would work… that is what I use.

Kitchener st is for when you have two ends of work to graft together. Like sock toes or shoulders. Mattress stitching would be fine.