I talk a lot. I ask lots of questions and clarify and make sure they're actively engaged but I teach. If I use a video (and I use a lot tbh as I find a 3 minute clip actually showing them eg. what the inside of an early factory looked like clearer, quicker and more memorable than a lot of text) I pause frequently fleshing out parts, checking understanding, connecting it back to our LO. If teacher talk is still frowned upon I'll be in trouble but an hour (particularly after movement time, getting settled, register, lates etc) is not long and I have LOs that I want to be sure they thoroughly understand and have embedded and connected to the broader scheme of learning.
I do however slash lots from the department plans in my own lesson, avoid extraneous and distracting crap and get rid of tasks that seem to be time fillers rather than constructive. My talking is also a large part of my differentiation, what some will have grasped readily and be ready to do the task on others will need several examples or analogies that make it click for them enough for it to be usable and memorable, some will be ready to write an answer right away others will need me to model answers verbally, what do we know about x, how could we write that in a way that shows that knowledge and explains it with examples etc. Also extension once those who needed more input are underway with questioning the more able, asking how they could add to their answer, how they could link or prioritise factors, how they could meaningfully include features of prior learning etc.
Department planning is different tasks for different abilities according to flight path which can be useful but ideally they should be learning all of it and reaching for the flight path above imo rather than just shunting along in their little lane so I'm not a massive fan.
I dare say all of this is considered very old fashioned and 'too much talking' but?