It's easy to see what is and what isn't working throughout the course of a game.
Like those few touches Splitter converted while he was on the floor with Blair (not much different cir stance if it's Tim on the floor not Blair).
Like how Tim's legs were dead, which was a reason for his off night offensively from the 1st quarter onward.
These things are easily noticeable and should be taken into account going into crunch time.
This "I don't know what will work" nonsense when Tim and Splitter are on the floor together is laughable. We know both of their strengths. We know where they like the ball. We know who is on and who is off throughout the course of the game.
It's not rocket science as much as you're implying it to be.