I think what I said is correct, the first excommunication was that of Mor Dionysius VI in 1912 , we can safely say that by the time of the visit of Mor Dionysius to Mardin or atleast at the time of the visit of Patriarch Elias III to Malabar, the excommunication was lifted . In any case all this became irrelevant when the Patriarch and the Catholicos mutually accepted each other, resulting in 1) reestablishment of communion between the Syrian Orthodox and Malankara Orthodox 2) complete union of the 2 parties in India.
The second one was the excommunication of 1972 when the Patriarch excommunicated the Catholicos; while the Indian Synod suspended and deposed the bishops who were consecrated by the Patriarch without any reference to the Synod in India or the Catholicos, no counter excommunication of the Patriarch happened.
The most recent ones are the excommunications of the 3 Patriarchal faction bishops who joined the Malankara Orthodox Synod in the aftermath of Supreme court verdicts of 1995 and 2002.
In the incident you mentioned Cor Episcopa Tarzi of Burbank , congregations in Rhode Island were received and Monk Severios was consecrated as Bishop by the Malankara Orthodox Church for parishes in Europe etc, but again no excommunication was imposed either on the Patriarch or any of his bishops.
As Father Peter has said and as both of us are well aware, the reasons for all this are quite complex. The bitterness created by a century of fratricidal war keeps the pot boiling.
The majority of the Orthodox Christians in India today are in a state of impaired communion with the Syrian Patriarchate, it is tragedy and I think each one of us including the hierarchy on both sides has a duty to try and restore peace.