On your User Settings page, there is a set of options entitled "Note Configuration" - The option here titled "Note text threshold" controls whether deeply nested comments are displayed within subject threads.

By increasing this value, additional threaded comments can be viewed within subject threads without traversing the individual thread posts.

 

perl -e 'print+unpack("N",pack("B32","00000000000000000000000111010000")),"\n"'