Turkey makes build up under watchful Russian eyes in the sky, attempts to invade Syria but its air force and navy are decimated in the first 10 minutes, while the TA tries to cross the boarder without any air cover and suffers mass casualties, retreats - end of the 15 minute war.
Turkey knows any such attempt would lose most of its military, leaving the Kurds a free hand.
Don’t underestimate the level of Muslim arrogance and high opinion of their military abilities.