There are a few scenes with differing lengths (marked with TV Version time / Extended Version time):
30:37 / 30:37-31:44:
After the attack in the woods and the black screen due to a commercial
break, the Extended Version contains an additional scene with Morgan.
He is riding across the ghost town for a while and the sound of bells
is audible in the background.
Extended version is 66.7 sec longer
53:44-53:59 / 54:51-55:05
Alternate take. Negan swears plus his voice is pitched differently:
"You killed more of my people. Not cool. Not fucking cool. You have no
fucking idea how not fucking cool that shit is."
TV Version is 0.8 sec longer
55:28-55:39 / 56:34-56:45
After quite some time without any alteration whatsoever, alternate
footage has been used here.
Negan: "But swallow it you most certainly motherfucking will. You
ruled the roost."
Extended Version is 0.4 sec longer
55:56-56:10 / 57:02-57:16
Negan: "You are not safe. Not even fucking close. In fact, you are
fucked (pegged), more fucked (pegged) if you don't give me (do) what I
want. And what I want is half your shit."
TV Version 0.3 sec longer
56:33-56:45 / 57:39-57:48
When Negan keeps talking, the TV Version sticks to the medium long
shot for a little while. After that, an alternate take follows.
Negan: "We own that fucking door. You try to fucking stop us (and) we
will fucking knock that fucker (it) down."
TV Version is 2.8 sec longer
57:11-57:25 / 58:14-58:30
Negan: "I want you to work for me. And You can't do that if you're
fucking dead, now, can you? I'm not growing a garden."
Extended Version is 1.7 sec longer
57:32-57:38 / 58:37-58:47
...and he ends his comment with "lot of them" - the shot is the same.
The Blu-ray on the other hand contains a closer shot of Negan and in
addition to that, he uses the words "shitload of them" instead. After
that, an alternate take with a slightly longer comment: "More than I'm
comfortable with. And for that, well for that you're gonna fucking
Extended Version is 3.9 sec longer
57:44-57:58 / 58:53-59:06
After a few identical reaction shots, more alternate takes follow. Of
course, Negan's choice of words is also different: "I'm gonna beat the
holy fuck-fucking-fuckedy-fuck (hell) outta one of you."
TV Version is 0.4 sec longer
Aside from that, there are a few scenes with different audio due to language, but those are the scenes which have actual differences in length.