In A the 
hairpin's arms are of different length, hence their intended range remains unclear. To the A text we adopt the range marked by the top arm, which was written first. This is the version we give in the main text. However, the version adopted by GE, based on the range of the bottom arm, can be considered an equal variant. In these sources cresc. begins only just in bar 157. The FE (→EE) version is probably also authentic, in which there is only one crescendo indication instead of two, that is cresc. from bar 156.
Compare the passage in the sources»
category imprint: Graphic ambiguousness; Differences between sources
issues: Scope of dynamic hairpins, Inaccuracies in A
notation: Articulation, Accents, Hairpins, Verbal indications