The slur of GC (→GE) includes only this part of the five-bar-long melodic passage whose performance Chopin assigned to the left hand. It is certainly an inaccuracy, perhaps repeated after [A] (the original version?). In turn, a respective slur in FE is broken at the end of the text's line and most probably it was supposed to be led to the end of the phrase (Chopin could have extended it in [A] already after having prepared GC). There is no doubt it is necessary to embrace the entire passage with a slur, if we take into consideration the authentic slurring of analogous phrases. Both possibilities of starting the slur – from the first or second beat of bar 164 – can be considered to be equal.
See b. 81-87
Compare the passage in the sources»
category imprint: Differences between sources
issues: Inaccuracies in FE, GE revisions, Inaccuracies in GC, Authentic corrections of EE
notation: Slurs