s. Just like I can see a tree in front of me and choose to contemplate it or think about something else, or hear a symphony and choose to think about something else, there seems to me to be no reason whatsoever to conclude that the mind's reception of an image would dictate that the mind occupy itself in contemplating that image to the exclusion of other thoughts.
Oh I don't think any of the texts say you can't perceive more than one thing at a time. You can touch something with your hand, see something else with your eyes, "think" of something with your mind. In fact, you have an almost infinite number of eidola streaming at you all the time. It's like a radio. ALL radio stations are streaming through the air. The dial decides which station to pay attention to.