Joe Marler escaped punishment from the officials on Saturday in an incident that seemingly left Alun Wyn Jones bemused.
Sloppy early play and second-half indiscipline cost Wales against England, says Alun Wyn Jones.
England maintained their Six Nations title bid with victory against Wales, aided by a scoring return for wing Anthony Watson.
France head to Murrayfield scenting a Grand Slam and a first Six Nations title in a decade, while wounded Wales face England.
Wales have lost back-to-back Six Nations clashes and will face England at Twickenham on Saturday with a side showing four changes.
Italy have had a second Six Nations match postponed due to the coronavirus, with doubts over whether the tournament will be completed.
Mark Wilson and Anthony Watson replace Sam Underhill and Jonathan Joseph respectively in the England side to face Wales.
Mako Vunipola could play for Saracens this weekend, but England were advised not to take any risks following the prop's trip overseas.
Experienced duo Dan Biggar and Liam Williams are on course to be fit for Wales' showdown with England at Twickenham.
Ireland's clash with Italy in Dublin is the only Six Nations match to be postponed due to the coronavirus.