Thank you, I got the information from How to Brew 4th edition. So this is a better way to a standard recipe steps of soaking the grain bag in hot water then sparge grain bag with 170 degree water? It sounds like you stated How to Brew steeping would avoid extracting tannins.
Has anyone tried John Palmer Partial Mash method of combining dissolve extract and grain bag in kettle cold water. Then heat to 150-160 degrees for 30 minutes. After that regular step boiling hops, etc.