Does the hypothesis 'Meanwhile, a manager from Boston Center reported that they had deciphered what they had heard in one of the first hijacker transmissions from American 11: Boston  Hey . . . you still there?' logically conflict with the premise 'A manager from the Boston center said they heard a hijacker transmission.'
Meanwhile, a manager from Boston Center reported that they had deciphered what they had heard in one of the first hijacker transmissions from American 11: Boston  Hey . . . you still there?###A manager from the Boston center said they heard a hijacker transmission.