Hmmm. JiK, I went to quilting bees for years when my mother and others of her church and community got together to make quilts for "relief". I've never seen two people work on the same block of quilt.

The old fill, of course, was not synthetic (and much lighter) material but cotton batting that was spread out over the prospective quilt; kind of a tricky business. I remember when my mother first used the fiberfill that is still used today. The old quilts and comforters were not washable.