Whilst we can't validate facts here, Canon runs a clear interview process with a formal offer normally only being extended after the 2nd stage meeting (sometimes later if necessary). It is however common practice to establish expectations on both sides which can include discussing what a potential offer may look like if successful. Where offers are made, it is also common practice to set timescales for a decision - 2 days would be surprising but it is not unreasonable to set deadlines in the interests of managing expectations of both candidates and a business with a need - and certainly not to be perceived as a "threat" of any kind.