Yes, and no other Catholic Liturgy within reasonable distance. So like here in Canada there may be towns that could be hours from another town and they may have only one Catholic parish, and if the priest were to leave for one Sunday for whatever reason and there is no replacement, then they are dispensed by the nature of the situation. But if there’s another Catholic parish in town but of an Eastern Rite in another language, we are still obliged to attend from that parish.
I wanted to relate it with the original post. Since we are encouraged to attend a Liturgy of the Word, and such can be led by a layperson, I wonder of an Episcopailian service would suffice for it.
Yes, its an alternative but I am unsure if it can replace the obligation (ie. fulfill the obligation). Canon Law says the obligation is fulfilled by attending Liturgy of any Catholic Rite. Since Liturgy of the Word is not a full Liturgy, I do not think the obligation can be transferred.
The readings for that Sunday are to be used if you will celebrate the Liturgy of the Word to be held by the same parish. But if you attend say an Orthodox service, for sure the readings would be different.
I’m just pointing out that on a given Sunday, the readings are different in the EF and other ritual Churches even within the Catholic Church. So if you are attending the Liturgy of the Word in an Orthodox Church, for sure the reading would be different and wouldn’t satisfy what you were saying about attending a Liturgy of the Word using the same Sunday readings. But I guess we need to solve first if the obligation can be substituted by a Liturgy of the Word.