It's not a fast train it's slow central local from Andheri or Goregaon to cstm or panvel
How do you know that? I thought any local overtaking is would be a "fast" local.:-)
We are Mumbaikars haha joke apart Your traveling on western line their are only slow central railway local run between Mahim and Goregaon
Yes, I noticed the train did stop at the next station Santa Cruz.