the schism occurred around 400 AD and since then the churches have remained different, actually four different places 1 at rome,2 at constantinople, 3 alexandria, 4 at antiochia which has been the see of christians in india before the evangilical movement by catholics. ScitDei your sources are very unrealiable because there was only one church before the portugese arrived in India. people didn't have any denominations before the evangilical movement.  they only went to one church that church definitely wasn't catholic. constantinople and alexandria later merged with rome but the see of antiochia has not till date.  schism of 1054 had in no way altered the church in india atleast upto and until the catholic evangilical movemement in india.   George