GNU cross-toolchain compatibility between 8.3-2019.03 and 9.2-2019.12

In case of 9.2-2019.12, Windows hosted cross compilers for AArch32 target with hard float is provided as "gcc-arm-9.2-2019.12-mingw-w64-i686-arm-none-linux-gnueabihf.tar.xz".
(https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads)
But I cannot find a toolchain 8.3-2019.03 for the same platform in the following URL.
(https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads/8-3-2019-03)

Is there 8.3-2019.03 Windows hosted cross compilers for AArch32 target with hard float?
Can we use "gcc-arm-9.2-2019.12-mingw-w64-i686-arm-none-linux-gnueabihf.tar.xz" instead of 8.3-2019.03?

We are developing a device which adapts TI AM57X MPU.
In their web site, we can get the prepared components for the MPU and ARM GCC 8.3 2019.03 hard-float toolchain is introduced.
(http://software-dl.ti.com/processor-sdk-linux-rt/esd/AM57X/latest/index_FDS.html)
We need to use not only Linux but also Windows for developing its applications.
So we definitely need GNU GCC hard float toolchain for both Linux and Windows.
Since 8.3 2019.03 is TI's recommended version,
we would like to have 8.3-2019.03 Windows hosted cross compilers for AArch32 target with hard float.
If "gcc-arm-9.2-2019.12-mingw-w64-i686-arm-none-linux-gnueabihf.tar.xz" has a complete compatibility with 8.3-2019.03,
we are pleased to use "gcc-arm-9.2-2019.12-mingw-w64-i686-arm-none-linux-gnueabihf.tar.xz".

Thank you for your help in advance.

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