I don't know what is SOWP( some kind of work permit?)
Canada has no such thing as "filing by couple"). You can not be taxed as a tax resident in your case because you haven't landed yet. Your 2022 income will not be subject to tax in Canada.
However, I think HK tax year is April 1 to march 31 therefore you may have to file a HK tax return for the period April 1 , 2022 to Mar 31, 2023.
Make sure you keep records showing that March 31, 2023 HK tax return does not include any income from Hk after you landed in 2023. keep those documents for at least 7 years in case you are being selected for audit.
https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/notices/2012/hong-kong-signed.html
An Agreement between the Government of Canada and the Government of the Hong Kong Special Administrative Region of the People’s Republic of China for the avoidance of double taxation and the prevention of fiscal evasion with respect to taxes on income was signed on November 11, 2012, in Hong Kong.
The Agreement limits the rate of withholding tax to 5% for dividends paid between companies, to 15% for dividends paid in all other cases, and to 10% for payments of interest and royalties. The Agreement also exempts from withholding tax certain payments of interest.
Consistent with the Government's policy announced in Budget 2007, the Agreement includes provisions reflecting the standard developed by the Organisation for Economic Cooperation and Development for the exchange of tax information.
The Agreement will enter into force once Canada and Hong Kong have notified each other that the procedures required by their laws for the bringing into force of the Agreement have been completed. In Canada, the Agreement will have effect, in respect of tax withheld at source on amounts paid or credited to non-residents, on or after the first day of January in the calendar year following that in which the Agreement enters into force; and, in respect of other taxes, for taxation years beginning on or after the first day of January in the calendar year following that in which the Agreement enters into force.