i could ask them.. but the simple way ( to me..) is that the search engine looks to what url the user is on, and sticks to that url to search..
the reason why we use gtranslate is because the can ‘host’ all languages. so we only change dns server for cryptosecret.fr ( example) and the translation is directly done via their system. this way, we only have to work on the .be website..
i hope you understand my explanation… if not, ill try to ask them for an api connection