XT:
iT is cross trade from same broker.
So you use GHR Broker and Jen uses GHR, same parcel or part parcel sold through some broker.
NX:
National Best Bid and Offer (NBBO)Crossings in ASX Trade due to the introduction of competing markets.
Some info:
https://www.asxonline.com/intradoc-cgi/groups/.../asx_032118.pdf
