And just what are you blaming your dismal forecast on??
Apple, last I checked, has no less than 6 chips that are designed in-house.
The A-series took the longest to transition... I believe they 1st started heavily tweaking the reference designs around A4 in 2010.
However, they have done an amazing job (both with quality & aggressive timeframes) w/ completely “from scratch” designs. The S-series in the watch has had 6 iterations since its introduction in 2014. The T-series security chip has had 2 designs since 2016. The W-series for AirPod/Beats has had 3 designs since 2016. Lastly, both the H-1 & U-1 debuted just this last year.
All these chips have been lauded.
Apple CLEARLY has one of the top chip design teams in the world.
I feel like your 2 year “best-case scenario” guess presupposes that they literally began working on 5G only after finalizing the Intel deal... for all we know, they were a year away from their own solution when they closed w/ Intel, & that cut their expected final design to 6 months.
I also have a gut feeling that we’ll see these Apple 5G modems 1st in the September, 2021 phones... however, I feel that it’s within the realm of possibility we’ll see something this year. To whit; an interesting article was posted here that the iPad Pro would be rolling out in 2 waves- wifi 1st, then 5G a few months later. It would be exciting to see the 1st Apple modem included there (less volume would help, as well), & would explain the oddity