Thanks for the clarification and it makes perfect sense now.
Another question,
Wil I get a temporary visa for Germany from UK? Like 3 months and will apply for blue card when I get there? Or I will get a full 4 year resident visa? I am asking this because if my wife's visa processing gets late and I get the visa, I can maybe ask my new employer to postpone the joining date. But I won't be able to do that if according to visa rules I have to be in Germany asap.
Also I read the details from following link: https://www.auswaertiges-amt.de/en/newsroom/konsularisches/urkundenverkehrteilb/231968
It says,
[font=BundesSerifWeb, Arial, "Helvetica Neue", Helvetica, Cambria, "ST Heiti", serif]Some German missions abroad needed to suspend legalization until further notice due to formal reasons. This change in procedure currently pertains to documents from the following states:[font=BundesSerifWeb, Arial, "Helvetica Neue", Helvetica, Cambria, "ST Heiti", serif]Afghanistan, Azerbaijan, Bangladesh, Benin, Burundi, Cambodia, Cameroon, the Central African Republic, Cameroon, Chad, Côte d'Ivoire, the Democratic Republic of the Congo, Republic of the Congo, Djibouti, the Dominican Republic, Equatorial Guinea, Eritrea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Haiti, India, Iraq, Kenya, Kosovo, Kyrgyzstan, Laos, Liberia, Libya (legalization is only suspended for certain documents), Madagascar, Mali, Morocco (legalization is only suspended for certain documents), Mongolia, Myanmar, Nepal, Niger, Nigeria, Pakistan, the Philippines, Sierra Leone, Somalia, South Sudan, Sri Lanka, Sudan, Syria (legalization is only suspended for certain documents), Tadzhikistan, Togo, Tunisia (legalization is only suspended for certain documents), Turkmenistan, Uganda, Uzbekistan[font=BundesSerifWeb, Arial, "Helvetica Neue", Helvetica, Cambria, "ST Heiti", serif]In most countries however, the local German consular officers can offer alternative procedures to verify the authenticity of documents. However, this service is available upon request of German authorities only. It cannot be requested by the holder of the document alone.
Which means we are at the mercy of German visa processing, whether they will initiate the verification or not. So I guess all I have to do is get the documents stamped by foreign office in Pakistan and submit them in German Embassy in UK.