Les Sept Paroles du Christ sur la Croix (composed 1859) is a musical setting of The Seven Last Words of Christ by Cesar Franck, though the name in French often refers to an equally well or better known homonymous work by Charles Gounod "Les sept paroles de N.S. Jesus-Christ sur la croix".
Can we infer the following?
Cesar Franck knew about the work of Charles Gounod
It's impossible to say