I have both. They have are exactly the same minus shape as per GL.inet specificiations. The (t) means travel size i.e. form factor and minus the extra MIMO and 2 extra LAN ports. Could you explain the difference to me, i would love to be wrong? This also holds water looking inside both devices, same stuff different shape. They only offer one download from the sdk for both and it is the ax1800 (ipq_ipq60xx-qsdk11).
The boost 1.58 was brought up to show they are using a version of OpenWRT older than 18.06 (which uses boost versions 1.61 and 1.62) and was added as further proof of the age of the openwrt build and the packages for this router. The age matters when it comes to security. Additionally if this is based of Chaos Calmer and is heavily patched then one can argue this is not an openwrt ready device as advertised and is really running something openwrt-ish.
I understand when it comes to making the image that there can be differences that will effect the image creation like flash sizes etc, but i am not even to that part yet, we are still trying to get the SDK (package builder) to build the base linux image in the cross-compiler that builds the custom packages. The SDK cannot build the base linux image without errors. AKA the toplevel.mk file is broken. Specifically trying to build bzip2 for the base linux (my guess is a package conflict because they are using such an old codebase and package repository.