Because it became a (massive) hammer with the implimentation of 117. The (previous) language plus 117 meant you had to have 10 hours rest after you manually acknowledged in icrew/phone. That, coupled with the 9 hours prior language, meant either 19 hours or, if strictly interpreted, unlimited un-usability. That may or may not have been overturned in a grievance, but the 9+10 was a very safe bet because the language there was very clear.

I was actually thinking we'd split the difference and settle for 16 or so. But instead we settled for 13. Then have the extra hour up and went back to 12. With voicemail notification. The last truly big "hammer" we may ever have is now gone.

Another huge concession was day one going from noon to 10am. Noon was the company's best case unilateral fatasy they felt they could even maybe stand a chance with in arbitration under the old language. They knew they stood no chance for anything earlier. Yet we willingly gave them 10am, which is the FAR bare bones minimum now. And we called that a huge win from the previous 5am, which was a dead in the water relic from a bygone era anyway.