Trudeau, SNC-Lavalin affair and Huawei executive detention

I wonder what the full connection is between the SNC-Lavalin affair and the Huawei executive detention. The timing overlapped enough that the blowback from the SNC-Lavalin affair would have severely hampered the PMO's efforts to intervene in the Huawei case if inclined to do so. Also, the conclusion of the Huawei affair days after the election reeks of political timing. The fact that the release was done through a DPA with the US AG raises additional questions.