Not really. I know each image by heart. I also practice image strengthening methods so it’s very clear and vivid. This is the easy part. The challenge is to link one image to the other by way of applying certain actions to get the end result. If you had all the time in the world then you could do this by using a little imagination. What I do is to apply specific pair linking methods to each image which could be one or more of the 10 methods I identified.
Knowing the linking methods gives the available actions to make the link with 2 or more images. This will take some time to practice. With the way I have categorized the links I can see what action are available to apply to the next image and so on which cuts away most of the thinking time. In fact, using this method I have identified each action for each image already. So with 2 images it’s very quick to see the link action and the end result image. This is Object Action Object with no persons involved. I also add sounds where I can which helps to strengthen the link. Sound is not anyways necessary when competing as you d memorise at a high speed. But if you had a lot of time in your hand then making the connections with 2 or more images with the sounds does make the end result almost not forgettable.
As for PAO, the same system is used and it will not be confusing.
If anything it would be even more memorable to add a person to the same method I explained above. Instead of the image linking to the other, it would be the person making the link with the image to the other. This of course will take a lot of time to practice because the recognition of the persons and doing the actions with the persons do take longer than just linking 2 objects , because you have to keep the the person involved during the linking process. And I found it slower if used to compete. This doesn’t mean it wouldn’t work for competing, it would mean it would take a lot of time to practice , perhaps months or years to perfect it. However I found that once you can master a 2 image link to perfection, then it’s just a matter of adding a person to it which will make the links much more memorable if used as pao.
Adding number shapes to mark up the journey is not confusing. If anything I found it easy to remember the journey much easier. And using pao or oa while the other object is there made no difference but made more memorable. If adding the same image you use when linking may confuse you , perhaps you can try adding it to every 5th location to leave a clue on the pathway. That also I found it works well too when I memorized 200 digits of pie I’ve added a number shape to every 5th location one after the other to remember the positions of the digits. My next goal is to memorise 500 digits for demo I’m preparing to do,and I’ll be adding a number shape to each h of the 5th location, so it would be like 5th 10th 15th and so on I’ll have an image to represent 1 2 3 and so on. With doing this I was able to name a digit on any position by simply thinking of the number shape in the background and I could then see the five links around it, it was just a matter of counting with simple math.