@OP:
Why don't you post the make/model of your 2-stage furnace for discussion?
Some 2-stage variable motor type furnace must mate with their custom thermostat (*typically already came free as part of the package during installation*) like my parent's Trane XV95 will set the blower to low until more heat is being called for... I think it has 3 or 4 steps to high (blast) but unless your house is experiencing extreme cold outside , otherwise: I only came across their (parents) furnace on high blast during the coldest winter days or nites.
Q.
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