For GT-7XY and WGT-7XY. Is it the same to WDM concept above?

please refer to following collocation and notice.
GT-706A15-------------------------------WGT-706B15: work normally. (Note: please set fiber interface of WGT-706B15 run at force full duplex mode.)
GT-706B15-------------------------------WGT-706A15: work normally. (Note: please set fiber interface of WGT-706A15 run at force full duplex mode.)