is it not how the eastern churches do it? the orthodox church?
The Byzantine Catholics (Melkites, Ukrainians, Ruthenians, and several other churches Sui Iuris) typically receive both species, them having been comingled in the chalice, and distributed by the priest using a spoon.
Some Byzantines (some Melkite parishes do) and IIRC the Armenians dip strips of the precious body into the blood at the time of distribution; the priest or deacon does this, then places in on the tongue.
In either of these cases, the bread which was consecrated is leavened; Wheat, water, yeast…
The Maronites intinct the much the same as the Latins: The priest or deacon dips a host into the chalice for the communicant, then places the host upon the communicant’s tongue. It is somewhat more common, however, than Roman use. (see below.)
Roman intinction is only allowed when the minister of Holy Communion is a bishop, priest or deacon. The ordained minister takes the Body, and dips it into the chalice, typically about 1/2 to 2/3 of the host, and then places it upon the tongue. Note that an EMHC or Altar server may hold the patton or the chalice for the priest or deacon… but the priest or deacon handles the host. Note that, prior to 1980 or so, many Latin Rite parishes only used intinction for the feast of Corpus Christi, with some also using intinction for other major feasts, as well.
Separate reception is the norm in the Roman church at present: receive the body, then the blood separately. If EMHC’s are used, then intinction is forbidden by Roman liturgical norms and canon law.
Reception under one species was roman norm for centuries except for the feast of Corpus Christi…
Also note: Clerics in the Byzantine and Latin churches do not normally receive by intinction, either. They consume the species separately, and must receive under both species.
The Eastern Orthodox are Byzantines, BTW, just not Catholics (in the sense of in Union with Rome).