text: The deacon's dominant role in the communion service is ancient and still unambiguous in the Byzantine liturgy--deacons lead the Our Father that begins the communion ritual and carry the chalice (with bread and wine) inviting the faithful to communion. 
  
  I now recall the gesture of supporting the priest's arm during the offertory, but have never noticed the mutual recitation of Offerimus tibi...calicem. I gather there is no similar diaconal participation in the offering of the bread?
  
  Again, thank you for pointing this out, Tridentinus.