Parts of the davenning are in Aramaic. I understood that the Malochim (Angels) do not understand Aramaic. Since HKB”H does not “attend” prayers with less than a Minyan, one does not say the Aramaic parts of Selichos if davenning without a Minyan.
Are there other principles involved with Aramaic prayers?
How do we explain
1) that the Aramaic parts of Kedusha D’sidrah (Uvo LeTzion) should be said quietly?
2) That some siddurim allow one to say one of the “Yekum Purkan” prayers on Shabbos morning without a Minyan.