Tentacle slave and master give different TC

Hi, my problem with tentacle sync: If I jam one tentacle unit (master unit, attached to camera) to the other (slave unit, attached to sound recorder) , until the green light lits and both lights blink simultaniously , it should be like the slave unit has adopted the TC of the master unit. But in fact the tow TimeCodes differs: after I have processed it all into APP, it turns out that the slave unit’s TC is 14 seconds and 11 frames behind. Puzzles me…

greetings Wiek