Subcontracted to Giovanola. It's their box spine track design. When Walter Bolliger and Claude Mabillard left and formed B&M it was one of the things they took with them (They no doubt originally designed it, or worked on it) along with a couple of other design traits, which they all then perfected and sold themselves.
It seemed to be the case with a lot of Intamin ride for a while. They'd subcontract to Giovanola. I'm not sure why. Maybe Intamin couldn't stretch their resources that far or something.
Indiana Jones at DLP is the same. Only in that case it's an Pinfari layout and design, by Intamin, subcontracted to Giovanola
That's what I was told to explain their similarities anyway.