Flapping one wing of Karma and the other wing of Bhakti, propelled by the tail of Jnana , the jiva bird gains height and reaches ParamAtmA"
This is the shloka of your quote…..
Matam vishishtadvaitam me golokodham [ akshardham ] chepsitam ,
Tatra brahmatmana krsnseva MUKTISHCHA gamyatam .
You are right , this does not need the glass and is as transparent as gyan provided no maya intercepts .