Most likely, because they miscommunicated. The FDNY knew the building was going to collapse from 2pm on and had let the reporters know this. read more
In fact, it would not fall for another 23 minutes, and it can clearly be seen to the top right of Standley as she conducts the interview. The BBC claimed that the satellite feed had an electronic timer that cut out at exactly 5.15pm, five or so minutes before the building collapsed for real. read more