My friend is an Italian specialist who travels quite often for work; in April he'll have to go to Australia to fix a problem for Client A.
The client has sent him a Letter of Invitation that will allow him to apply for a work visa for the whole month.
Due to Covid restrictions, he'll have to quarantine for half of that time; this was accounted for, the problem of Client A can be fixed in the remaining time.
Now Client B, also Australian, wants to hire my friend for a couple of weeks in May.
A and B are not direct competitors, but A is not in the mood of doing any free favours to B, so they won't extend their Letter of Invitation to cover May too.
My friend can get a Letter of Invitation from B for the two weeks in May, but such a letter will include the date of entry - what would that date be? By the time the invitation from Client B comes into effect, he will have been in Australia for a full month!
Can Client B somehow extend the invitation of Client A, even if the two firms are not on speaking terms? Is there some other solution that does not involve exiting the country and doing another quarantine?