Following a tweet from @TMcorp, the repairs are expected to progress between 23-29 October. Customers are expected to face service degradation while accessing servers in… well, everywhere else.
The original tweet as follows:
Cable faults on AAG will b repaired by consortium mbrs frm 23-29Oct. Cust may exp svc degradn when accessg cntnt hosted in US,North Asia&EU.
So your question’s “Why would it take so long?” Quoting them again:
Cos it takes time for our consortium mmbrs to get to the loc u c,as d loc of d affected cble is situated somewhere far.
A new tweet about a temporary solution.
While consortium mmbrs work 2 restore d AAG cable, traffic r being diverted 2 other alt routes via North Asia&EU to alleviate d congestion.