Unfortunately for you, the feats are stacked against in my favor.
Characters with infinite speed are only able to react to finite speed objects and attacks in 0 time, and can only travel a finite distance in 0 time.
Immeasurable Speed Characters can move freely across time, dodge an attack that is already been struck, and perceive Infinite Speed Characters as completely immobile.
I believe this is enough evidence why Saitama bypasses UI, unless you are too into "Infinity cannot be measured, and has no quantity" and if that's the case here here is some more stuff.
Immeasurable cannot even be represented by names like "Infinity".
Infinity DOES have a quantity, but is increasing faster than time moves, so it is impossible to measure.
There are infinites larger than others, so you can imagine "Immeasurable" as one of those infinites that has passed the "Infinity" line into the "Immeasurable" category.