Perhaps. Perhaps more significant is that (all this from memory when I did some research after learning about this Charlie Foxtrot) the machine failed 3 days after it chewed through the steel casing of well sunk and then left there by the same state government org that's running the whole project.
Almost needless to say, they didn't tell anyone about this minor detail for a month. And while no one was talking when I checked, it's obviously very questionable this will be covered under Hitachi's warranty coverage.
Another minor detail is that that state org, their transportation department or whatever, has a wonderful financial setup for this project. Well, for them, anyway. They're paying a fixed amount, and the city will have to cover any overages. Which at this point look to be substantial, I think they'll have blown through the project's ~$48 million reserve by now.
Oh, and that earthquake damaged viaduct? Estimates are that if the tunneling or other activities like this rescue cause it to drop by 2 inches (1 more than the hopefully local drop reported in this article), they'll have to close it.