I agree it should be easy to trace. However, we don’t know who is on the distribution of the transcripts or notes. No doubt the intel community and the State Department would be on the list because of the foreign policy implications. And if there are actual recordings of the conversations, WHCA would be involved. The bottom line is that there could be a wider distribution than we know and some of the recipients could either be Obama appointee holdovers or partisan career bureaucrats.
Anyone who watched the Snowden movie knows every call is monitored so it is just a matter if it was read. Those techniques were done ten years ago.
Obama did not have to physically ask for their phones to be monitored so it becomes word parsing as to what really happened. He was tapping them.