Regarding repayment of Obamacare subsidies for higher-than-projected yearly income, if my company health insurance from a new job began two months before the termination of my Obamacare coverage, am I still obligated to pay back the tax credits for those two overlapping months in which I had Obamacare and my company health insurance, or am I only responsible for paying back the monthly tax credits ($400/month) in which I exclusively had Obamacare? Thank you!