How much time for updates: HP-UX and AIX.?

Wasn't sure how to word the title... sorry.

In HP-UX and AIX specifically you apply a set of patches, not like solaris and linux where you update what's needed individually. So, for example, when going from patch level 1.1 to 1.8 is the time to complete exponential (1.1 -> 1.2 -> 1.3.. so on) or does it take the same amount of time as it would going from 1.1 to 1.2?

Any insight to this would be greatly appreciated since there isn't anything from the 'google admin guide' relating to it.

In HP-UX - it take same amount of time.

Here is a document for hp-ux patch management: http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01919407/c01919407.pdf