Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.
Example: How are i.e. and e.g. pronounced?
Example solution: i.e. stands for id est (Latin), which means 'that is'. You use it to link in a deeper explanation about something. Pronounce it 'eye - ee'. e.g. stands for exempli gratia (also Latin), which means 'for example'. You use it to link in an example of a more generic term. Pronounce it 'ee - jee'
Example explanation: Perfect answer because it's consistent with context uses required information from the question to provide the detailed answer with an example.

Problem: Is there a word that describes or denotes a type of conversation in which two speakers speak two different languages. In our country, Pakistan, there are approximately 75 languages, from which Urdu, Punjabi and Sindhi are common, excluding English. So today I found two women speaking two different languages. For example: Speaker 1 has Urdu as their mother tongue. Speaker 2 has Sindhi as their mother tongue. Speaker 1 and 2 spoke their own mother tongue, which are different (Urdu and Sindhi) but both can understand each other's language. I thought that this is known as 'intermingling conversation,' or a 'code switching.' In my opinion, we can't use such words because code-switching refers 'shifting completely to the other language for a word, a phrase or sentence, and then revert back to the base language.' Example sentences: They were in a bus and had [adjective] conversation. They were in a bus and had [noun or noun-phrase for such conversation]. I agree that the question (which is suspected as a duplicate one to this question) is really a duplicate, but its single answer still doesn't satisfy all. In that question, the phrase 'bilingual dialogue' was suggested, which I (and others may) think that this refers to the code switching as well, which I don't want here. Some words confuse the readers which sense do they mean. I would also love to quote the comment of @Lambie regarding the term 'bilingual' over here: 'Bilingual refers to one person. Not two people each of whom has a passive knowledge of the other's language but do not speak it well enough to use it actively.'.
Solution: In his book Talk in Two Languages, Joseph Gafaranga examines, among other things, the patterns of conversation within bilingual families. He calls the pattern described in the OP's question the parallel mode. Here is a screenshot from Google Books of the introduction to his discussion of the parallel mode pattern. So by Gafaranga's terminology the Urdu and Sindhi speakers were conducting a conversation in parallel (language) mode.