I want to fly PER-SIN-FRA-JFK (no stopovers) paying for PER-SIN-FRA legs on my credit card & redeeming Krisflyer points for the FRA-JFK leg, is it possible to link up these bookings so my baggage gets checked all the way thru to New York? or would I have to collect my bags clear customs & immigration then check back in for the FRA-JFK flight? If unable to check my bag thru to JFK the connection times between the flights is 2 hours, would this be suffient if I have to re-check in?