Whereas, protein digestion starts in the stomach and also continues into the stomach where it is further broken down. However, lipids begin after fat droplets are emulsified by bile which is produced by the liver. This answer can be located on pages 651-652.
Moreover, the reason this is correct is due to the fact that in the mouth there is salivary amylase that digests starch to maltose. Within the small intestine, maltose is further broken down into glucose. Within the Protein digestion pepsin which is produced by the stomach digests protein to peptides and continues in the small intestine where trypsin carries out this same process. Lipids digestion end with monoglycerides (glycerol + one fatty acid) and fatty