Pass a Sequence Reference from calling Sequence to called Sequence

Hello Community, 

I have two TestStand Sequences calling each other. Only the second sequence is known. The first one can have any name and be in any path. 

The first sequence, let´s call her SeqA, calls a SubSequence, called Test, from the second sequence, I´ll go for SeqB. In the subsequence Test is a call to a SubSequence from the SeqA. 

My problem is, that I´m unable to get a reference of SeqA to SeqB for the sequence call.

I already have the Sequence Context from SeqA. I would be very happy, if that would somehow be enough, to get the reference. 

I just don´t want to pass two parameters, if not necessary.

Greetings Fred