Will TiVo Bolt work with live Comcast XFinity TV subscription?

Hello all,

I am about to purchase a new TiVo Bolt today (I was previously considering the TiVO Roamio).

I'm interested in using this device to replace my Comcast digital box.

I saw a review online mention the TiVo Bolt will only work with recorded content. Is this true?

I'm interested in using TiVo Bolt as both a DVR and a means to watch live television through my Comcast XFInity subscription.