Rephrase your question-Example Can I pump water back into the weeping tile? Can I pump weeping tile water into the mainline? Can I tie the weeping tile into the main below ground? Septic? City sewer-separate or combined? How many feet below the windows to the basement floor? Any area drains outside tied into the weeping tile too? (Very likely)
Vacuum out the floor drain/finger in one ear stick your other ear to the drain.
Have someone flush upstairs. If it's clean Should be able to hear it flush.