Without tearing apart the rules (and/or the English language, ahem), I would suggest that the "touching" in those 2 citations is entirely different.
In one, it refers to the physical distance/contact between Talisman and Mage, while in the other it refers to the end-result "Range" for purposes of casting a spell and only that (see very first sentence under OtIT, p 162).
The important phrase here is "considered to be" - and the question is "considered to be" in what context? Well - in the context of determining the Range for casting the spell in question, which is what this effect is all about. Not for purposes of transmitting a disease, nor sensing body temperature, nor making the target count as "touching" someone unclean (a wizard) and breaking a vow, not anything but the Range for casting a spell.
So, I would say that OtIT does not fall into the "physically touching my talisman" category. They are covered by the same term, "Touch", by coincidence, not by their nature via any intent of the Rules. If you cast OtIT on your Tali', you could cast a spell with Range:Touch on it, but that is not the same as actually being in physical contact with it - which is needed to gain the advantages you cite.
As for another effect? I, personally, would say that, if allowed, it would have to be a very custom effect, to simulate/extend those specific effects of physical contact between mage and talisman.
(Note that you can HouseRule whatever interpretation or re-vision you'd like, regardless of what the Rule may or may not imply or state outright. Want to allow a "connection" to the Tali' within 100 Leagues of the mage? It's your saga, done, play on. But the above is how ~I~ would read the Rules, as written and as intended. ysmv.)