Most of what I need to know is learned through the history. It is probably 80% history, 20% physical. But I do the physical.
I ask about poor teeth, especially chipped and loose ones. That has proven important in several cases I was supervising. Oddities are noted. Large teeth, underbite, overbite, small chin, limited extension or flexion, large tongue. Otherwise a M1, FROM, no loose teeth suffices.
It is easy to auscultate when I tell them, "I need to make sure you have a heart". It usually gets a chuckle from a family member saying, "that is debatable". I don't do the full heart exam repeated supine, sitting, and leaning forward of visualization, palpation, percussion, and auscultation in 4 locations. That would be too much.
I commonly listen left and right for the lungs. Asthmatics or COPDers getting a bit more attention.