Can ILR combine Tier I E with WP?

[Parthaab]

If I have total 5 years of stay, initial Tier I entrepreneur, switching to Work Permit after initial 3 years, can I apply for ILR?
Will ILR then be decided on ( 5 years - 180 days in any year ) criteria ( as per Work Permit to ILR route ), or as per Tier I entrepreneur criteria ( 5 years - 180 days in all years )?

[Darvesh]

in my opinion 5y will counted on single route either it will be T1E or T2(work permit) cant be mix of both.

[Parthaab]

in my opinion 5y will counted on single route either it will be T1E or T2(work permit) cant be mix of both.

The only refusal criteria are:
convictions which had led to a sentence of imprisonment of 4 years or more; (there is no amnesty period under this sub-paragraph)
convictions which had led to a sentence of imprisonment from 12 months to under 4 years, unless 15 years have passed since the end of the sentence;
sentence to imprisonment for less than 12 months, unless 7 years have passed since the end of the sentence;
any non-custodial sentence, caution or warning within 24 months prior to the date of the decision on the application.

The time in the UK - continous residence - is the only positive criterion to be fulfilled, according to the HO.
'Continous residence' is not needed for Tier I entrepreneur.
So it is not clear what happens when someone switches from Tier I entrepreneur ( continous residence not necessary ) to Tier 2 ( continous residence necessary ). Does the 5 year period itself start only after the switching and can it not be combined?