yes. one can only assume its because of this that some poor deluded fools think that milk in first for tea is acceptable, when you want the water as hot as possible. onyl time milk firt is acceptable is when tea has been made in a pot.
usually 30 sec, with a bit of stiring to aggitate and circulate. i know a minute or two is ideal but after 30 secs its diminishing returns and i'm impatient. 3min? only if using a teapot.
pouring in the water from on high to slosh the water and introduce some air is beneficial.