You can still daisy chain comms for as many soeakers as you sustem needs. The 7200's can be type as 6 or type 1. They will sound and react the same either way. I believe type 6 only allows them to be configured as sides or rears. In any case they will still respond to the left and right digital speaker as appropriate.

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#1 Trinnov Altitude 32-8-16, 271, 8000XE, 7200SEHC, 7200.2, Seaton F18, JL Fathom F113, Revel w990's, Kef R7, ATI 528 Amp, JVC RS4100K, SI screen. Roon Nucleus+, Eno AG, Eno M link, 218.
#2 Mark Levinson No5105, Ayre VX8 and CX8, Vandersteen Treo CT, Preamp varies.
#3 Meridian Ellipse