Originally Posted by
spelger
i've read that when in certain modes the di2 will handle front shifting for you and maybe even full automatic. that tells me it is monitoring cadence somehow.
It’s not that kind of automatic. So no need to monitor cadence. The auto part is deciding when to shift the front mech in sequential mode. So you just shift up/down and the “auto” takes care of front shifts as and when required. You tell the software what cassette and chainrings are fitted so it knows when to shift the front and compensate at the rear.
But I prefer to shift the front mech manually for the reasons DaveSSS stated.