Old Mar 21, 18, 2:14 pm
  #14  
sfo789
 
Join Date: Apr 2016
Location: EWR/LHR/SFO
Programs: UA 1K 1MM
Posts: 574
Originally Posted by fumje View Post
actually after more poking around my experiences don't exactly fit the 1.5hr block time threshold, e.g., yul-ewr was blocked at 1.7hrs, and I had lax-sfo blocked at 1.6hrs, but it's somewhere around there.
I believe the BoB threshold lengths, like the Polaris pyjama lengths, are measured by average stage length over some time period. For example, LAX<>SFO goes as short as 1h11m and as long as 1h45m, so it makes sense to average it to <90min on UA's part (or at least is vaguely consistent, given they clearly can't be serving BoB on the 1:35 flights and not the 1:25 flights).
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