I need to preface this by saying that I've only just started getting into tea a while ago so I'm no professional. This may be a pointless test but I found it fun.
I recently got a new basket to steep my tea in that was double the size of my first one and I found the tea tasted better with more room to expand. That made me wonder about what it would taste like with unlimited space. Obviously I could just have the tea loose in the pot but I don't want it to be oversteeped so that wouldn't work for me. That made me think of our french press (I’ve heard people used those for tea). My idea was to brew the tea in the french press so the tea has all the space needed to flow freely, and then pour the tea into my teapot once it’s finished steeping. I tried it and I found the tea tasted softer. Not weaker, just softer and maybe less astringent.
That leads me to my controlled experiment. Same amount of water and tea, same water temperature, same steeping time. One cup made in the french press (then poured directly into the cup instead of the pot for the sake of the experiment), one in my regular basket and teapot. I tasted them side by side and found it had the same result. The french press tea was softer (and in my opinion nicer).
I used a Swedish tea blend from a tea house called Sibyllans that I like. It’s their black christmas tea (yes it is very early but it's SO good), flavoured with cinnamon, cardamom, ginger, oranges, and vanilla.
The reason I'm posting this is because I guess I want confirmation that there’s science or something behind it and that it's not in my head hahah. Also, I find little experiments like this very fun and would love to hear about yours if you have any.