CO2 did follow temperature when it could. About Seven Thousand Years Ago it stopped following Temperature and it has been rising with no connection to Temperature. Temperature does not care what CO2 does. The Thermostat of Earth, Arctic Sea Ice and Water, does not care how much heat CO2 can trap, the thermostat can handle all of it easily.
If you include modern recorded temperature and modern recorded CO2, you will get even more disconnect between Temperature and CO2. Temperature is well bounded and not following CO2.
Look at the DATA! This CO2 data was sent to me in December of 2009 by: