Starting multiple sequence in one phase

Hi,

Is it possible to configure multiple sequences in one phase for one sequencer? Like i have multiple sequencers in my env. 

In one of the sequencer main pahse i am registering default sequnce as seq1. If in same test for same main phase if I register seq 2 as default sequnce what will happen?

- seq2 will be overridden by seq1 for main phase for that sequencer

or - it will add seq 2 in sequencer main phase queue to execute after seq1?

Thanks in advance for your time.

Thanks,

Akshay