Thanks for commenting Jouni.
Glad you noticed my tone. I've worked hard on that!
You're absolutely right about the interplay between those pairs of notes. Funnily enough, I was aware of the way they interact, but obviously, I wasn't making this anywhere near clear enough in my rendition. It's a good idea to practice those notes in the way you suggest.
I have been told that when performing a piece, one has to make the expression employed, absolutely clear, by what may seem like, (to the player), an exaggeration. I've yet to learn this properly! I am a bit "lazy" about listening more carefully, to ensure that what I want heard, actually is heard. However, I am now approaching this issue. In fact, playing expressively, much more demonstrably, is my main focus, at the moment. Thanks for highlighting the issue for me again!