Not the same waves. These black holes expended 5 solar masses of energy making these waves. This is actually a monumental achievement. They have been trying to directly detect gravity waves for decades. The precision required is smaller than the width of an atomic nucleus. Even Einstein though they would never detect them directly. Nobel prizes are coming if this result survives peer review. (Earned Nobels ,unlike the peace prize!)
Catch 22...
“These black holes expended 5 solar masses of energy making these waves.” Really? Prove it.