The PGWP would map to length of the combined programs so 20 months. Not sure this is any different to the previous guidelines even for a single program where any program between 8-23 months would have have a PGWP issued to the equivalent program time.
. Ultimately expect visa officers do have some discretion but with the new guidelines the implication seems to be that the combined length of taking two programs must exceed 2 years to get 3 year PGWP, anything 2 years or less would map only to the combined total of the two programs as stated in any completion letter
Yes, this is the same thing I have been saying. It may be bad for some people but atleast they are more clear on what you are elegible for.