It's worth noting that neither Leon Jaworski (Watergate Special Prosecutor) nor Ken Starr (White water) specifically recommended pursuing obstruction of justice charges, yet we know how that worked out for the respective presidents involved.
it is my understanding that both Leon Jaworski and Ken Starr had a preponderance of evidence for obstruction, but because the subject was the President of the United States, and further, that the Justice Department has a policy against indicting a sitting President, they decided that it was not their job to bring these indictments.
Both of them, Jaworski and Starr, decided that any action against the President was Congress' job, and so forwarded on all of the materials to the House and Senate Judiciary committees. Neither made a declaration about obstruction one way or another, but they listed the facts for and against in their reports. (It was after reviewing the Jaworski report that the House decided to file for impeachment of Nixon, listing "Obstruction of Justice" as one of the first charges.) It sounds like this is the playbook Mueller followed; he listed the facts for and against as well.
Barr, however, has upended this procedure and made the call regarding obstruction himself, but Barr has an established opinion that a sitting President cannot be charged with obstruction. And now the Justice Department is trying to dig in and not let Congress see the Mueller material. A further note: neither Jaworski nor Starr allowed the White House time to review the report before Congress.
This "Barr Report" appears to be little more than a fig leaf, written for an audience of one.