The two-bar slur, written in A in bar 161 (written out) and 162 (empty), is most probably only a signal that in the marked bars 162-191 one has to include the slurring written in the first appearance of this section. Therefore, we limit its range to bar 161 and in bar 162 we repeat the slur from bar 34. This is how the Chopin notation was reproduced in the editions.
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category imprint: Interpretations within context; Differences between sources
issues: Inaccurate slurs in A
notation: Slurs