I ain’t, it didn’t.

No. Standard Lightning cable with a USB-C to USB-A adaptor. I'm expecting delivery of a 7-port Thunderbolt 3 hub in a week or so. That way I can keep using the older peripherals without a mass of dongles.

Apple offers a new 13-in MB Pro without Touch Bar and it's equipped with the Kaby Lake (15 Watt) processors, the Touch Bar models have bigger, faster & more power-hungry Kaby Lake gear.

While Apple offers a Touch Bar-free 15-in MB Pro, what they don't tell you is that it's the 2015 model, retained as an entry-level device.
That said, it's a 2.2 GHz quad-core i7 and is still a far better performer than ANY 13-in MB Pro, even the 3.5 GHz dual-core 3.5 GHz i7.

I've just ordered a magnetic breakaway adaptor for the USB-C charging cable on the MacBook Pro. It sits on the end of the existing cable & leaves a section a few millimetres long protruding from the Thunderbolt port when sufficient force is applied.

MagSafe 3?

There's folks out there who just plain hate the super-short key travel on the new Macbook Pro range, I'm definitely not one of them, I love it.

I just noticed that our Dear Leader of the Mac User Group satellite meeting will be presenting in July on how to replace an old Mac with a new one. He had it easier than I did, at least his old one was still bootable, mine was too soggy for that.
We have a committee meeting on Monday, I'll offer to assist his presentation with aspects of my own experience.

Started charging the iPhone SE this morning when its battery was at 69%. Used the 61-watt charger from the MacBook Pro. For the next 20 minutes the charging was around 1% per minute with no warming up of the phone. At that stage I stopped monitoring the process.

Only if you either don’t have or don’t use the backlight.

Slim hope indeed. But I have the back of it off, battery disconnected and under a 16°C stream pf dry warmish air from a reverse-cycle A/C unit. It’s been there for about 36 hours thus far.
I noticed corrosion on the battery connector plug.

Charging test: Lightning cable connected between iPhone SE and USB-C to USB-A adaptor which is plugged into the MacBook Pro’s 61 watt charger.
No excessive heat buildup - yet.