It was a 4-hour-plus video. Since there was no timestamp for Kalafina provided, I decided to just go through it and get to the ladies organically as programmed, and also without reading comments! [edit: I was expecting to quickly skim through each performance but got into so many of the performances!]
One of the first highlights for me was the drummer from the Highwaystar lives was on stage -
always solid.
Angela at 4:45 was as epic as usual. She's such a seasoned performer. I enjoyed her narration at the begin leading to her singing.
I came for just Kalafina but stayed to watch the entirety of her performance. [edit: Is it just me or does she bear a resemblance to Mari Endo of SH fame?]
Granrodeo x Suzuki Konomo at 26:10 The lightness of her voice reminded me a bit of an early Hikaru in terms of flexibility but with more resonance/lift. Want to hear more of her.
bless4 (recent find for me) weren't there to play their popular "Aishiteru" classic; instead it was covered by a collaborative collection of artists, including Granrodeo.
1:14:17 I guess the live vocal group for the VA's of the Sound Euphonium anime, including our beloved
Tomoyo Kurosawa! She was the best singer of the group.
2:03:47 Got my wish.
Suzuki Konomo again, featuring the dance group Ashnikko for an interesting electronic pop-styled track with choreography(!) and, thereafter, powerfully covered an Angela classic. I'm now a fan of the full version of this lady.
2:29:25 Angela x Fripside - epic duo vocals! Angela is a character (and hype lady)!
2:44:20 "Fly me to the moon cover" by Ms Yoko Takahashi (nice jazzy notes/scats), and of course her inescapable classic song.
2:53:46 KALAFINA, FINALLY! This set of songs has been a go-to setlist of sorts it seems.
1. What an interesting pianistic start to "Magia"... somewhat shaky intro from the violin though not
live. I would have preferred Konno tracked full-toned.
Hikaru got hyped and kinda yelled the ending of verse one, such that she went more off-pitch, but she gives her usual energetic performance.
Keiko was on point visually and vocally throughout.
2. "Ongaku" instrumentation was kinda light in the start, but the synth keys came in strong with the melody later (I appreciated that color).
Wakana struggled a bit with the epic kajiurago solo and the falsetto notes afterwards.
That's always a showcase for her, usually.
3. "heavenly blue" was better because it started low/dark and Hikaru didn't need to go above low-middle voice for most, and she only had to sing lightly in harmony when she did. She and Keiko always do well with those moody 2-part harmonies.
This song really had Wakana's voice sounding exposed, though, since it was a continuous lead for her. It wasn't blending as well with the others for my ears.
All in all, a familiar roster of songs and a return to the general anisong concert for them.
I hope they get stronger and recover more vocally for these kinds of raw, live showcases.
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Speaking generally vocally about ANIMAX MUSIX, I appreciate seeing this wide collection of artists all delivering raw singing with just basic live effects, so what we heard from everyone on stage is what we got - technique, pitch, warts and all.
Suzuki Konomo is a revelation for me from this concert, as is the second lady from fripside (that did the duet with angela).
Their in house mix in the venue must sound good. 
That's a fact. They sound more like Kalafina when using her meticulous sound design for their performances; it's not just a matter of musicians (no matter how good) playing the instrumentals of the music. KONNO's FULL VIOLIN TONE/SOLO is not there. It would be foolhardy to come to this kind of show and not bring some of your strongest supporting elements a la Kajiura's "design". It's not just their voices a cappella that creates the high expectation of Kalafina 's signature sound (especially with the past/recent vocal challenges).