What are the particular issues with cycling India, out of interest?
It's clearly a massive country, so routing* could change everything (I think they stuck to the coast more-or-less). The problems seemed to be endless! Just from memory:
I suspect - linking to Ming's post above - India was where they were lucky to survive a hit-from-behind with (mainly) just damage to panniers (and a lot of shock).[EDIT:
actually that may have been in Malaysia ... ]
Nowhere was "touring friendly" - they wasted hours on locating suitable accomodation+food**.
Steve got sick. Frankly many riders wouldn't have pushed through his problems, and it certainly cost them days on their schedule overall.
Debilitatingly hot for two Brits.
*I think this was also the biggest section of re-route forced on them - may have missed their planned flight into the country?
**This is stuff that more planning
might have helped with; but consider how long this ride is, two people couldn't plan everything.