I apologize for not catching this sooner, but I did not include my process for reading binaries from the chips.   here's a little short post on that.

The commands are all very similar and I'm using the same two config files as before, openocd-1.cfg and openocd-2.cfg.  The commands for reading your binaries off of multiple chips are as follows.  The blurb at the top is the relevant bit from the openocd manual.

# Command: flash read_bank num filename [offset [length]]
# Read length bytes from the flash bank num starting at offset and write 
# the contents to the binary filename. If offset is omitted, start at 
# the beginning of the flash bank. If length is omitted, read the 
# remaining bytes from the flash bank. The num parameter is a 
# value shown by flash banks.


openocd -d0 -f openocd-1.cfg -c 'reset halt' -c 'flash read_bank 0 a5-1.bin 0x08000000' -c 'reset' -c 'exit'

openocd -d0 -f openocd-2.cfg -c 'reset halt' -c 'flash read_bank 0 a5-2.bin 0x08000000' -c 'reset' -c 'exit'

If I run my little script with those commands in it...

./read-binaries 
Open On-Chip Debugger 0.11.0+dev-00546-g5795f4d3e (2021-12-22-14:13)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
debug_level: 0

target halted due to debug-request, current mode: Thread 
xPSR: 0xf1000000 pc: 0x00003660 msp: 0x20000330
wrote 16384 bytes to file a5-1.bin from flash bank 0 at offset 0x00000000 in 0.155701s (102.761 KiB/s)

Open On-Chip Debugger 0.11.0+dev-00546-g5795f4d3e (2021-12-22-14:13)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
debug_level: 0

target halted due to debug-request, current mode: Thread 
xPSR: 0xf1000000 pc: 0x00003660 msp: 0x20000330
wrote 16384 bytes to file a5-2.bin from flash bank 0 at offset 0x00000000 in 0.154476s (103.576 KiB/s)

You can see that it starts correctly and reads until the end, giving the correct 16384 byte size files.  And here are the files:

-rw-rw-r-- 1 clapp clapp 16384 Jan 13 18:42 a5-1.bin
-rw-rw-r-- 1 clapp clapp 16384 Jan 13 18:42 a5-2.bin

 Then a quick little reprogram and verify that they run and we now have vetted binary files.

Cheers!