Flightwatch passed it on quite eloquently,
thanks for the level 5 for most of us by the way,
it is, and has been, a multy language company and our daily speak is english, although with a heavy german accent by myself and others.
No primaries on your native tounge. No primaries on your language background, nothing to fear, there is no german part of the interview that will threaten you. whoever passes is welcome, as long as he speaks english in a descend way.